Project A01

Papers

  • M. Dall'Arno, A. Tosini, F. Buscemi, "The signaling dimension in generalized probabilistic theories", Quantum Information and Computation, 24, 5&6, 411-424, https://doi.org/10.26421/QIC24.5-6-2
  • A. S. Darmawan, Y. Nakata, S. Tamiya, H. Yamasaki, "Low-depth random Clifford circuits for quantum coding against Pauli noise using a tensor-network decoder", Physical Review Research 6, 023055, https://doi.org/10.1103/PhysRevResearch.6.023055
  • Y. Nakata and M. Tezuka, "Hayden-Preskill Recovery in Hamiltonian Systems", Physical Review Research 6, L022021, https://doi.org/10.1103/PhysRevResearch.6.L022021
  • M. Dall'Arno and F. Buscemi, "Tight conic approximation of testing regions for quantum statistical models and measurements", Physics Letters A, 526, 129959, 2024/10/3, https://doi.org/10.1016/j.physleta.2024.129956
  • G. Bai, D. Šafránek, J. Schindler, F. Buscemi, and V. Scarani, "Observational entropy with general quantum priors", Quantum 8, 524, https://doi.org/10.22331/q-2024-11-14-1524
  • T. Nagasawa, K. Kato, E. Wakakuwa, and F. Buscemi, "Generic increase of observational entropy in isolated systems", Physical Review Research 6, 043327, https://doi.org/10.1103/PhysRevResearch.6.043327
  • S. Minagawa, M.H. Mohammady, K. Sakai, K. Kato, and F. Buscemi, "Universal validity of the second law of information thermodynamics", Quantum Information 11, 18, https://doi.org/10.1038/s41534-024-00922-w
  • K. Azuma, "Networking quantum networks with minimum cost aggregation", Quantum Information, 11, 51, https://doi.org/10.1038/s41534-025-01000-5

aaa

Presentations

  • Koji Azuma, "Connecting quantum networks with minimum cost aggregation", QIT50, 2024/5, AIST, Tsukuba, Japan
  • Ryu Hayakawa, "単体複体上の量子ウォークとHarmonicホモロジー", QIT50, 2024/5, AIST, Tsukuba, Japan
  • Francesco Buscemi, "Information revivals without backflows: non-causal explanations of non-Markovianity", 55th Symposium on Mathematical Physics, 2024/6, Copernicus University, Torun, Poland
  • Francesco Buscemi, "Incompatible incompatibilities, and how to make them compatible again", IQSA 2024, 2024/7, Vrije Universiteit Brussel, Brussles, Belgium
  • Francesco Buscemi, "Axioms for retrodiction: achieving time-reversal symmetry with a prior", IQSA 2024, 2024/7, Vrije Universiteit Brussel, Brussles, Belgium,
  • Yoshifumi Nakata, "Hayden-Preskill protocol from quantum information perspective", Quantum Threads, 2024/07, Kyung Hee University, Seoul, Korea
  • Koji Azuma, "All-photonic approaches to quantum repeaters", SPIE Optics + Photonics 2024, 2024/8, San Diego Convention Center, San Diego, US
  • Francesco Buscemi, "Squashed information backflows in non-Markovian quantum stochastic processes", Bridging Quantum Information and Mathematical Physics, 2024/8, University of Cambridge, Cambridge, UK, .
  • Francesco Buscemi, Macroscopic states and entropy: properties, meaning, and some recent results, QCMC2024, 2024/8, IIT Madras, Chennai, India
  • Francesco Buscemi, "How a resource-theoretic approach can shed light on quantum measurement theory", AQIS 2024 Satellite Workshop on Fundamental Aspects of Quantum Information (FAQI), 2024/8, Sapporo City Gender Equality Center, Hokkaido, Japan
  • Koji Azuma, "Networking quantum networks with minimum cost aggregation", QCrypt 2024, 2024/9, Sede Afundación, Vigo, Spain, poster
  • Koji Azuma, "Concatenating quantum networks with minimum-cost aggregation", IMSI Workshop: Quantum Networks, 2024/9, IMSI, Chicago, US
  • Koji Azuma, "最小コストアグリゲーションに基づく量子ネットワーク連接", The Physical Society of Japan 79th Annual Meeting, 2024/9, Hokkaido University, Sapporo, Japan
  • Francesco Buscemi, "Semiquantum Tests: Closing the "Nonlocality Gap" in Space and the "Clumsiness Loophole" in Time", Symposium for Celebrating 60 years of Bell's theorem, 2024/9, Shibaura Institute of Technology, online
  • Francesco Buscemi, "von Neumann’s "other" entropy: properties, interpretations, and applications", 16th Italian Quantum Information Science Conference (IQIS24), 2024/9, TUi, Pizzo Calabro, Italy
  • Francesco Buscemi, "Observing Microscopic Systems on a Macroscopic Scale: from Quantum Bayes' Rule to the Second Law", From Quantum Materials to Quantum Information: Symposium on Trans-Scale Quantum Science and Quantum Materials Synthesis, 2024/11, OIST, Okinawa, Japan
  • Francesco Buscemi, "Time-like correlations in quantum theory", Siam Quantum Science and Technology (SQST), 2024/12, Ao Nang, Krabi, Thailand
  • Francesco Buscemi, "Open quantum systems, non-unitarity, non-Markovian dynamics", Observing a Century of Quantum Mechanics, 2024/12, IISER, Kolkata, India
  • Yoshifumi Nakata, "Towards Quantum Error Correction in Hamiltonian Systems", New Trends in Condensed Matter Theory 2024, 2024/12, ISSP, The University of Tokyo, Chiba, Japan
  • Yoshifumi Nakata, "Decoding quantum information from chaos: QEC beyond the standard situation", KEK-THEORY Workshop 2024, 2024/12, KEK, Ibaraki, Japan
  • Koji Azuma, "All photonics quantum internet", PQE 2025, 2025/1, Golden Cliff, Snowbird, Us
  • Ryu Hayakawa, "Quantum computing and persistence in topological data analysis", 28th Annual Quantum Information Processing Conference (QIP 2025), 2025/1, Raleigh Convention Center, Raleigh, US, poster
  • Francesco Buscemi, "Macroscopic entropy and Bayesian inference: overview of recent results", 2025 International Young Researchers Forum on Quantum Information Science, 2025/2, NCKU, Tainan, Taiwan
  • Yoshifumi Nakata, "Unitary designs in quantum information theory" 6th RIKEN AIP Joint Seminar on Mathematics, 2025/02, Mahoroba Mines Miura, Kanagawa, Japan

Awards

  • Koji Azuma, NTT物性科学基礎研究所所長表彰業績賞, NTT物性科学基礎研究所, 2024/3

Books

  • Yoshifumi Nakata, 量子情報理論 ―情報から物理現象の理解まで―, 朝倉書店, 2024/10

Project B01

Papers

  • S. E. Aguilar-Gutierrez, S. Baiguera, N. Zenoni, "Holographic complexity of the extended Schwarzschild-de Sitter space", JHEP, 2024, 5, 201, 10.1007/JHEP05(2024)201
  • S. Terashima, "Wave packets in AdS/CFT correspondence", Phys.Rev.D, 2024, 109, 106012, 10.1103/PhysRevD.109.106012
  • S. Hirano, M. Shigemori, "Conformal field theory on TTbar-deformed space and correlators from dynamical coordinate transformations", JHEP 2024, 7, 190, 10.1007/JHEP07(2024)190

Presentations

  • Masaki Shigemori, "Exact Non-Abelian Supertubes", Particle Theory Seminar, Tokyo Institute of Technology, 2024/6/26, Online, Tokyo, Japan
  • Masaki Shigemori, "Multi-center solutions in supergravity and non-Abelian supertubes", Seminar at Toyota Technological Institute, 2025/3/11, Online, Nagoya, Japan

Project B02

Papers

  • Yoshifumi Nakata, Masaki Tezuka, "Hayden-Preskill Recovery in Hamiltonian Systems", Physical Review Research 6, 2, L022021-1-8, 10.1103/PhysRevResearch.6.L022021
  • Pak Hang Chris Lau, Chen-Te Ma, Jeff Murugan, Masaki Tezuka, "On the backreaction of Dirac matter in JT gravity and SYK model", Phys. Lett. B 853, 138702-1-6, 10.1016/j.physletb.2024.138702
  • Daisuke Yamamoto and Katsuhiro Morita, "Engineering of a Low-Entropy Quantum Simulator for Strongly Correlated Electrons Using SU(N)-Symmetric Cold Atom Mixtures", Physical Review Letters 132, 21, 213401, 10.1103/PhysRevLett.132.213401
  • Masanori Hanada, Antal Jevicki, Xianlong Liu, Enrico Rinaldi, Masaki Tezuka, "A model of randomly-coupled Pauli Spins", J. High Energ. Phys. 2024, 5, 0280-1-29, 10.1007/JHEP05(2024)280
  • Motoaki Bamba, Koji Hashimoto, Keiju Murata, Daichi Takeda, and Daisuke Yamamoto, "Spacetime-localized response in quantum critical spin systems: Insights from holography", Physical Review D 109, 126003, 10.1103/PhysRevD.109.126003
  • Ko Gondaira, Nobuo Furukawa, and Daisuke Yamamoto, "Dynamics of Interacting Bosons on the Sawtooth Lattice with a Flat Band", Journal of the Physical Society of Japan, 93, 074004, 10.7566/JPSJ.93.074004
  • Tatsuhiko Shirai and Takashi Mori, "Accelerated Decay due to Operator Spreading in Bulk-Dissipated Quantum Systems", Physical Review Letters, 133, 4, 040201, 10.1103/PhysRevLett.133.040201
  • Katsuki Nihongi, Takanori Kida, Daisuke Yamamoto, Yasuo Narumi, Julien Zaccaro, Yusuke Kousaka, Katsuya Inoue, Yoshiya Uwatoko, Koichi Kindo, and Masayuki Hagiwara, "Field-Induced Quantum Phase Transitions in the Pressure-Tuned Triangular-Lattice Antiferromagnet CsCuCl3", Journal of the Physical Society of Japan, 93, 084704, 10.7566/JPSJ.93.084704
  • Yuki Miyazaki, Giacomo Marmorini, Nobuo Furukawa, and Daisuke Yamamoto, "Rényi entropy of the permutationally invariant part of the ground state across a quantum phase transition", Physical Review A, 110, 052422, 10.1103/PhysRevA.110.052422
  • Takashi Mori, "Strong Markov dissipation in driven-dissipative quantum systems", Journal of Statistical Physics, 192, 1, 1, 10.1007/s10955-024-03377-7
  • Pratik Nandy, Tanay Pathak, Masaki Tezuka, "Probing quantum chaos through singular-value correlations in sparse non-Hermitian SYK model", Phys. Rev. B (Letter), 111, 6, L060201, 10.1103/PhysRevB.111.L060201

Presentations

  • K.Kaminishi, T.Mori, M.Sugawara, N.Yamamoto, "変分量子アルゴリズムにおける鞍点脱出に対する測定ノイズの影響," The Physical Society of Japan 79th Annual Meeting, 2024/9/16, Hokkaido University, Sapporo, Japan
  • Daisuke Yamamoto, "量⼦スピン系を⽤いた曲がった時空の量⼦シミュレーション", The 20th Quantum Spin Research Meeting, 2024/12/13, Akita Geijutu-mura Onsen Yupopo, Akita, Japan
  • Daisuke Yamamoto, "強磁場・高圧環境下における量子効果が生み出す新奇フラストレート磁性の理論的開拓と実験データ解析", 19th High Magnetic Field Forum General Meeting, 2024/12/19, Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
  • Honami Fukushima, Kotaro Tamaoka, Hiroshi Ueda, and Daisuke Yamamoto, "Pseudo entanglement entropy as a probe of quantum phase transitions: Matrix product state approach", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, Okinawa Institute of Science and Technology, Okinawa, Japan, poster
  • Giacomo Marmorini, Takeshi Fukuhara, and Daisuke Yamamoto, "Measurement of entanglement in a many-body quantum simulator via spiral quantum state tomography", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, Okinawa Institute of Science and Technology, Okinawa, Japan, poster
  • H.Fukushima, K.Tamaoka, H.Ueda, D.Yamamoto, "量子相転移現象における擬エンタングルメント・エントロピーの振る舞い：行列積状態を用いた解析", The Physical Society of Japan 79th Annual Meeting, 2024/09/16, Hokkaido University, Hokkaido, Japan
  • Y.Miyazaki, G.Marmorini, N.Furukawa, D.Yamamoto, "密度行列の置換不変部分による量子相の特徴付け", The Physical Society of Japan 79th Annual Meetign, 2024/09/16, Hokkaido University, Hokkaido, Japan
  • Daisuke Yamamoto, "強相関物性の量子シミュレーションとスパイラル基底量子トモグラフィ", The Physical Society of Japan 79th Annual Meeting, 2024/09/17, Hokkaido University, Hokkaido, Japan
  • Honami Fukushima, Kotaro Tamaoka, Hiroshi Ueda, and Daisuke Yamamoto, "Pseudo Entanglement Entropy Across a Quantum Phase Transition" International Conference on Magnetism 2024, 2024/7/1, Bologna congress center, Bologna, Italy, poster
  • Giacomo Marmorini and Daisuke Yamamoto, "Quantum Ψ phase in hexagonal antiferromagnets at high magnetic fields", International Conference on Magnetism 2024, 2024/7/2, Bologna congress center, Bologna, Italy, poster
  • Daisuke Yamamoto, "Synthetic Magnets with Ultracold Atoms: Exploration of Diverse Phases under Time-Periodic Driving" International Conference on Magnetism 2024, 2024/7/2, Bologna congress center, Bologna, Italy
  • Daisuke Yamamoto, "Exploration of Diverse Phases in Bose-Hubbard Systems under Dual Time-Periodic Driving", Quantum Simulation of Novel Phenomena with Ultracold Atoms and Molecules, 2024/04/23, YITP, Kyoto university, Kyoto, Japan
  • Masaki Tezuka, "Sparse Sachdev-Ye-Kitaev-like models: spectral correlations and information scrambling", Quantum Gravity and Information in Expanding Universe, 2025/2/17, YITP, Kyoto university, Kyoto, Japan
  • Masaki Tezuka, "Sparse SYK and SYK-like models", Workshop on Low-dimensional Gravity and SYK Model, 2025/3/24, Shinshu University, Matsumoto, Nagano Prefecture, Japan
  • Takashi Mori, "開放系の量子ダイナミクス", 熱場の量子論とその応用, 2024/9/11, YITP, Kyoto University, Kyoto, Japan
  • Takashi Mori, "量子多体系の非平衡ダイナミクス ---熱化の時間スケールをめぐって---", The Physical Society of Japan 79th Annual Meeting, 2024/9/17, Hokkaido University, Hokkaido, Japan

Workshop Organizations

  • Quantum Extreme Universe: Matter, Information, and Gravity, Okinawa Institute of Science and Technology, Okinawa, Japan, 2024/10/21-2024/10/25

Outreach

  • Daisuke Yamamoto, Seminar, 2024/10/19, 一般, 65名, 一般向け公開講座「量子の世界 ～物質・宇宙・コンピュータ～」内の１講座「量子の科学と未来の社会：量子コンピュータ入門」, Nihon U., https://www.phys.chs.nihon-u.ac.jp/topics/post-702/

Awards

  • Daisuke Yamamoto, 第6回強磁場フォーラムフロンティア奨励賞, 強磁場フォーラム, 2024/12

Press Release

  • Masaki Tezuka, 2024/05/02, 量子カオスとスクランブリングの非同一性の発見―複雑な量子多体ダイナミクスの量子情報的理解―, Kyoto University Press Release, https://www.kyoto-u.ac.jp/ja/research-news/2024-05-02-1
  • Daisuke Yamamoto, ネットニュース(Net news), 2024/05/21, エントロピー制御による量子シミュレーターの極低温冷却法を確立～高温超伝導や量子磁性などの仕組みの解明に期待～, Nihon U.,Tokyo University of Science, JST Press Release, https://www.jst.go.jp/pr/announce/20240521-3/index.html

Project B03

Papers

  • Chiang-Mei Chen, Yi Chen, Akihiro Ishibashi, Nobuyoshi Ohta, "Quantum Improved Regular Kerr Black Holes", Chin.J.Phys., 92, 766-778, https://doi.org/10.1016/j.cjph.2024.10.001
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", JHEP, 2025, 3, 68, https://doi.org/10.1007/JHEP03(2025)068
  • Ryusei Hamaki, Kengo Maeda, "Semiclassical rotating AdS black holes with quantum hair in holography", JHEP, 111, 4, 84021, https://doi.org/10.1103/PhysRevD.111.084021
  • Takumi Funato, Shunichiro Kinoshita, Norihiro Tanahashi, Shin Nakamura, Mamoru Matsuo, "Spin current generation due to differential rotation", Physical Review B, 111, 6, L060403, https://doi.org/10.48550/arXiv.2401.00174
  • Akihiro Ishibashi, Yoshinori Matsuo, Akane Tanaka, "Quantum focusing conjecture in two-dimensional evaporating black holes", JHEP, 2024, 9, 126
  • Takamasa Kanai, Kengo Maeda, Toshifumi Noumi, Daisuke Yoshida, "Cutoff scale of quadratic gravity from quantum focusing conjecture", Physical Review D, 110, 8, 84037
  • Motoaki Bamba, Koji Hashimoto, Keiju Murata, Daichi Takeda, Daisuke Yamamoto, "Spacetime-localized response in quantum critical spin systems: Insights from holography", Physical Review D, 109, 2, 126003
  • Shunichiro Kinoshita, "Geometrical origin of the Kodama vector", Physical Review D, 110, 4, 44056

Presentations

  • Akihiro Ishibashi, "Semiclassical Einstein equations from holography and boundary dynamics", The international symposium on Cosmology and Particle Astrophysics (CosPA) 2024, 2024/06/15, Ningbo, Ningbo
  • Yoshinori Matsuo, "Quantum focusing conjecture and the Page curve", 基研研究会「場の理論と弦理論2024」, 2024/8/6, YITP, Kyoto, Japan
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", The third young researchers' workshop for the Extreme Universe Collaboration, 2024/9/13, Grand Park Otaru, Otaru, Hokkaido, Japan, poster
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", The third young researchers' workshop for the Extreme Universe Collaboration, 2024/9/15, Grand Park Otaru, Otaru, Hokkaido, Japan
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", The Physical Society of Japan 79th Annual Meeting, 2024/9/19, Hokkaido University, Sapporo, Japan
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", 4th ExU Annual Meeting, 2024/9/25, Osaka U, Osaka, poster
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", ExU International Conference "Quantum extreme universe: matter, information and gravity", 2024/10/21, OIST, Okinawa, Japan, poster
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", JGRG33, 2024/12/6, Kindai U., Osaka府東Osaka
  • Yoshinori Matsuo, "Universal structure of islands in evaporating black holes", KEK Theory Workshop 2024, 2024/12/12, KEK, Tsukuba
  • Yoshinori Matsuo, "Quantum focusing conjecture and the Page curve", The Physical Society of Japan 2025 Spiring, 2025/3/19, online
  • Akihiro Ishibashi, "Aspects of Quantum Black Holes", Gravity 2025: New Horizon of Black Hole Physics, YITP, Kyoto U., Kyoto, Japan

Project C01

Papers

  • K.Okuyama, T.Suyama, "Solvable limit of ETH matrix model for double-scaled SYK", JHEP, 2024, 4, 94, 10.1007/JHEP04(2024)094
  • K. Okuyama, "Doubled Hilbert space in double-scaled SYK", JHEP, 2024, 4, 91, 10.1007/JHEP04(2024)091
  • J. Harper,T. Takayanagi, T. Tsuda, "Multi-entropy at low Renyi index in 2d CFTs", SciPostPhys, 2024, 16, 125, 10.21468/SciPostPhys.16.5.125
  • Y. Hikida, V. Schomerus, "Engineering Perturbative String Duals for Symmetric Product Orbifold CFTs", JHEP, 2024, 6, 71, 10.1007/JHEP06(2024)071
  • K.Okuyama, "More on doubled Hilbert space in double-scaled SYK", Phys.Lett.B, 855, 138858, 10.1016/j.physletb.2024.138858
  • H.-Y. Chen, Y. Hikida, Y. Taki, T. Uetoko, "Semi-classical saddles of three-dimensional gravity via holography", Phys.Rev.D, 2024, 110, 26018, 10.1103/PhysRevD.110.026018
  • J. Harper, H. Kanda, T. Takayanagi, K. Tasuki, "The g-theorem from Strong Subadditivity", Phys Rev. Lett, 133, 31501, https://doi.org/10.1103/PhysRevLett.133.031501
  • H.-Y. Chen, Y. Hikida, Y. Taki, T. Uetoko, "The semi-classical saddles in three-dimensional gravity via holography and mini-superspace approach", JHEP, 2024, 7, 283, 10.1007/JHEP07(2024)283
  • K.Okuyama, "Baby universe operators in the ETH matrix model of double-scaled SYK", JHEP, 2024, 10, 249, 10.1007/JHEP10(2024)249
  • P. Caputa, B. Chen, T. Takayanagi, and T. Tsuda, "Thermal Pseudo Entropy", JHEP, 2025, 1, 3, https://doi.org/10.1007/JHEP01(2025)003
  • K. Doi, N. Ogawa, K. Shinmyo, Y. Suzuki, T. Takayanagi, "Probing de Sitter Space Using CFT States", JHEP, 2025, 2, 93, 10.1007/JHEP02(2025)093

Presentations

  • T. Takayanagi, "Entropic g-theorem and Holography", KITP Conference: Spacetime and String Theory, 2024/04/03, KITP, UCSB, USA
  • K. Okuyama, "Doubled Hilbert space in double-scaled SYK", iTHEMS-YITP Workshop: Bootstrap, Localization and Holography, 2024/05/21, Kyoto U., Japan
  • Y. Hikida, "Semi-classical saddles of three-dimensional gravity via holography", Entanglement, Large N and Black Hole 2024, 2024/05/28, APCTP, Pohang, Korea
  • T. Takayanagi, "Introduction to holographic quantum entanglement", School of Frontiers in Hydrodynamics, Effective Field Theory, and Holographic Duality, 2024/07/07, Jilin U., China
  • T. Takayanagi, "Entanglement and emergence of gravitational spacetime", Infosys-ICTS Chandrasekhar Lectures, 2024/08/13, ICTS, India
  • Y. Hikida, "Semi-classical saddles of three-dimensional gravity via holography", 7th International Conference on Holography and String Theory in Da Nang, 2024/8/23, Duy Tan University, Da Nang, Vietnam
  • Y. Hikida, "Deriving a gauge-gravity correspondence", The 4th ExU Annual Meeting, 2024/9/26, Osaka University, Toyonaka, Osaka, Japan
  • T. Takayanagi, "Holographic Entanglement, Pseudo Entropy and Wormholes", OIST-ExU workshop: Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/24, OIST, Okinawa, Japan
  • T. Takayanagi, "Holographic Entanglement Entanglement Entropy and Spacetime: New Insightst", ADVANCED LECTURES ON THEORETICAL PHYSICS AND MATHEMATICS, Classical and Quantum Black Holes, Physics Latam, 2024/11/4, Physics Latam, online
  • T. Takayanagi, "Aspects of Holographic Pseudo Entropy", Gauge/Gravity Duality 2024, 2024/11/30, TSIMF, Sanya, China
  • Y.Hikida, "Complex saddles in three-dimensional gravity via holography and mini-superspace approach", 複素化による量子系に関する研究の発展, 2024/12, Saga University, Saga, Japan
  • T. Takayanagi, "Emergence of Gravitational Spacetime from Quantum Information", Hitoshi Fest, 2024/12/16, IPMU, Tokyo U., Kashiwa, Japan
  • Y. Hikida, "Complex saddles in three-dimensional gravity via holography and mini-superspace approach", SUPERGRAVITY: From Foundations to Frontiers, 2025/2/13, Osaka Institute of Technology, Osaka, Japan
  • T. Takayanagi, "Bulk reconstruction of de Sitter space from CFT", YITP workshop: Quantum Gravity and Information in Expanding Universe, 2025/2/19,YITP, Kyoto U., Kyoto Japan
  • T. Takayanagi, "Holographic Entanglement, Pseudo Entropy and Wormholes", Kyushu IAS-iTHEMS conference: Non-perturbative methods in QFT, 2025/03/12, Kyushu U., Fukuoka, Japana
  • K. Okuyama, "Recent developments in double-scaled SYK", Rikkyo MathPhys 2025, 2025/03/16, Rikkyo U., Tokyo, Japan

Workshop Organizations

  • ExU－OITS workshop "Quantum Extreme Universe: Matter, Information, and Gravity", co-host, Tadashi Takayanagi, YITP, Kyoto U., OIST, Japan, 2024/10/21-2024/10/25, 170名
  • Quantum Gravity and Information in Expanding Universe, co-host, Yasuaki Hikida, YITP, Kyoto U., YITP, Kyoto U., Japan, 2025/2/17-2025/2/21, 110名
  • Workshop on Low-dimensional Gravity and SYK model, host, Kazumi Okuyama, Shinshu University, Shinshu University, Japan, 2025/03/24-2025/03/28, 35名

Outreach

  • Tadashi Takayanagi, General Lecture-Seminar, 2024/09/08, General Public, 469 persons, 量子エンタングルメントから創発するホログラフィック宇宙, The Physical Society of Japan, The 23rd online physics lecture, https://www.jps.or.jp/public/online/online_202409.php
  • Shigeki Sugimoto, General Lecture-Seminar, 2024/6/14, College Students, 強い力と弦理論, ローレンツ祭特別講義, https://www.scphys.kyoto-u.ac.jp/lorentz/lorentz2024/index_files/lecture.html
  • Shigeki Sugimoto, General Lecture-Seminar, 2024/8/2, General Public, 54 persons, 弦理論と宇宙のはじまり, 金曜天文講話online/ 京都大学大学院理学研究科附属天文台, 一般財団法人花山宇宙文化財団, 京都大学大学院理学研究科宇宙物理学教室, https://friday240802.peatix.com/

Awards

  • Tadashi Takayanagi, ITCP Dirac Medal, ICTP, 2024/08/08
  • T. Kawamoto, 基研研究会 「熱場の量子論とその応用」 学生ポスター発表賞, 基研研究会 「熱場の量子論とその応用」, 2024/09/11
  • K.Tasuki, The Physical Society of Japan学生優秀発表賞, The Physical Society of Japan, 2024/10
  • Tadashi Takayanagi, Infosys-ICTS Chandrasekhar Lectures, ICTS, 2024年8月

Books

  • Tadashi Takayanagi, 宇宙は究極の量子コンピューター？, 岩波「科学」, 2024年8月, 岩波書店

Project C02

Papers

  • Masahiro Hotta and Sebastian Murk, "Probability vector representation of the Schrödinger equation and Leggett-Garg-type experiments", PRA, 109, 62224, https://doi.org/10.1103/PhysRevA.109.062224
  • Kazuya Yonekura, "Constraints on the topology of Type IIB string theory", JHEP, 2024, 7, 112, https://doi.org/10.1007/JHEP07(2024)112
  • Yuki Osawa, Kuan-Nan Lin, Yasusada Nambu, Masahiro Hotta, and Pisin Chen, "Final burst of the moving mirror is unrelated to the partner mode of analog Hawking radiation", PRD, 110, 25023, https://doi.org/10.1103/PhysRevD.110.025023
  • Yuji Tachikawa, Mayuko Yamashita, Kazuya Yonekura, "Remarks on Mod-2 Elliptic Genus", Commun.Math.Phys., 406, 16, 1, https://doi.org/10.1007/s00220-024-05202-4
  • Justin Kaidi, Yuji Tachikawa, Kazuya Yonekura, "On nonsupersymmetric heterotic branes", JHEP, 2025, 3, 211, 10.1007/JHEP03(2025)211

Presentations

  • K. Yonekura, "Non-BPS branes in heterotic superstring theories", Strings 2024, 2024/6/3, CERN, Geneva
  • Yunhyeon Jeong, Masahiro Hotta, Takaaki Mano and Go Yusa, "Deformation and Dynamics of Quantum Hall Edges", 36th International Conference on the Physics of Semiconductors (ICPS) 2024, 2024/8/2, Shaw center, Ottawa, Canada
  • Masahiro Hotta, "Particle detectors and purification partners for the observed particles", Relativistic Quantum Information North 2024, 2024/8/7, University of Prague, Prague, Distinguished Speaker
  • Go Yusa, "Toward quantum cosmology experiments in quantum Hall edges and probing their spacetime by ultrafast microscopy", Synthetic Electronic Quantum Matter 2024, 2024/8/28, Palacio Miramar, San Sebastian, Spain
  • Yunhyeon Jeong, Masahiro Hotta, Takaaki Mano and Go Yusa, "Analog Universe Expansion using Quantum Hall Edges", The 3rd young researchers' workshop of the Extreme Universe Collaboration & The 6th "Extreme Universe" School, 2024/9/14, Grand Park Otaru, Otaru, Japan
  • Yunhyeon Jeong, Masahiro Hotta, Takaaki Mano and Go Yusa, "Analog Universe Expansion using Quantum Hall Edges", The 3rd young researchers' workshop of the Extreme Universe Collaboration & The 6th "Extreme Universe" School, 2024/9/14, Grand Park Otaru, Otaru, Japan, poster
  • Y. Sada, N. Shibata, "分数量子ホール系におけるエッジ状態のポテンシャル依存性", The Physical Society of Japan, 2024/9/16, Hokkaido University, Sapporo, poster
  • K.Akiyama, S.Shibata, "ν=1/3分数量子ホール状態におけるエッジチャネルの伝導特性II", The Physical Society of Japan, 2024/9/16, Hokkaido University, Sapporo, poster
  • S.Takeshige, S.Shibata, "2層量子ホール系におけるν=1/3+2/3の基底状態", The Physical Society of Japan, 2024/9/16, Hokkaido University, Sapporo, poster
  • Y.Jeong, M.Hotta, T.Mano, G.Yusa, "膨張する量子ホールエッジの時空構造", The Physical Society of Japan, 2024/9/18, Hokkaido University, Sapporo
  • H.Kuan, N. Shibata, "質量項に依存した磁場中2次元ディラック電子系の量子多体状態", The Physical Society of Japan, 2024/9/18, Hokkaido University, Sapporo
  • S.Arakawa, N.Shibata , "DMRGを用いた相互作用を含む量子ホール-超伝導接合系の解析", The Physical Society of Japan, 2024/9/18, Hokkaido University, Sapporo, poster
  • Yunhyeon Jeong, Masahiro Hotta, Takaaki Mano and Go Yusa, "Analog Universe Expansion using Quantum Hall Edges", The 4th Annual Meeting of the Extreme Universe Collaboration, 2024/9/25, Osaka University, Osaka, poster
  • Akihito Takeuchi, "The Ground State in Frustrated Ising Spin Ladder Systems", The 4th Annual Meeting of the Extreme Universe Collaboration, 2024/9/25, Osaka University, Osaka, poster
  • Kazunori Akiyama, " Conductive properties of edge channels in ν = 1/3 fractional quantum Hall states", The 4th Annual Meeting of the Extreme Universe Collaboration, 2024/9/27, Osaka University, Osaka, poster
  • Yuichi Sata, "Potential dependence of the edge state in fractional quantum Hall systems", The 4th Annual Meeting of the Extreme Universe Collaboration, 2024/9/27, Osaka University, Osaka, poster
  • Hiroki Hasegawa, "Simulation of quench dynamics in the ANNNI model using iTEBD", The 4th Annual Meeting of the Extreme Universe Collaboration, 2024/9/27, Osaka University, Osaka, poster
  • Y.Jeong, M.Hotta, T.Mano and G.Yusa, "Analog Universe Expansion using Quantum Hall Edges", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, OIST, Okinawa, Japan
  • Masahiro Hotta, "量子エネルギーテレポーテーションの最近の進展", QIT51, 2024/11/28, Sunport Hall Takamatsu, Kagawa, Japan
  • Y.Jeong, M.Hotta, T.Mano, Go Yusa, "膨張する量子ホールエッジの現在と課題", 場の理論の新しい計算方法2024, 2024/12/20, University of Tokyo, Tokyo, Japan
  • S.Takeshige, N.Shibata, "2層量子ホール系における垂直電場効果", The Physical Society of Japan, 2025/3/20, poster

Project C03

Papers

  • Jin Saito, Zhibang Yao, Tsutomu Kobayashi, "PPN meets EFT of dark energy: Post-Newtonian approximation in higher-order scalar-tensor theories", JCAP, 6, 40, 2024/6/17, 10.1088/1475-7516/2024/06/040
  • Masaya Amo, Keisuke Izumi, Hirotaka Yoshino, Masamune Tomikawa, Tetsuya Shiromizu, "A generalization of photon sphere based on escape/capture cone", Eur.Phys.J.C, 84, 6, 638, 2024/6/25, https://doi.org/10.1140/epjc/s10052-024-12954-9
  • Hidetoshi Omiya, Takuya Takahashi, Takahiro Tanaka, Hirotaka Yoshino, "Deci-Hz gravitational waves from the self-interacting axion cloud around the rotating stellar mass black hole", Phys.Rev.D, 110, 044002, https://doi.org/10.1103/PhysRevD.110.044002
  • Keisuke Izumi, Toshifumi Noumi, Daisuke Yoshida, "Gedanken Experiments to Destroy a Black Hole by a Test Particle: Multiply Charged Black Hole with Higher Derivative Corrections", Phys.Rev.D, 110, 4, 44008, https://doi.org/10.1103/PhysRevD.110.044008
  • Eugeny Babichev, Keisuke Izumi, Karim Noui, Norihiro Tanahashi, Masahide Yamaguchi, "Generalisation of Conformal-Disformal Transformations of the Metric in Scalar-Tensor Theories", Phys.Rev.D, 110, 6, 064063, https://doi.org/10.1103/PhysRevD.110.064063
  • Takamasa Kanai, Kengo Maeda, Toshifumi Noumi, Daisuke Yoshida, "Cutoff Scale of Quadratic Gravity from Quantum Focusing Conjecture", Phys.Rev.D, 110, 084037, https://doi.org/10.1103/PhysRevD.110.084037
  • Keisuke Izumi, Tetsuya Shiromizu, Daisuke Yoshida, Yoshimune Tomikawa, Hirotaka Yoshino, "Loosely trapped surface for slowly rotating black hole", PTEP, 2024, 11, https://doi.org/10.1093/ptep/ptae158
  • Masato Nozawa, "Supersymmetry of the Robinson-Trautman solution", JHEP, 2024, 10, 201, https://doi.org/10.1007/JHEP10(2024)201
  • Kangjae Lee, Keisuke Izumi, Tetsuya Shiromizu, Hirotaka Yoshino, Yoshimune Tomikawa, "Attractive gravity probe surface in Einstein-Maxwell system", Phys.Rev.D, 110, 12, 124051, https://doi.org/10.1103/PhysRevD.110.124051
  • Jin Saito, Tsutomu Kobayashi, "Slowly moving black holes in Lorentz-violating scalar-tensor gravity", Phys.Rev.D, 111, 024062, https://doi.org/10.1103/PhysRevD.111.024062
  • T. Funato, S. Kinoshita, N. Tanahashi, S. Nakamura, M. Matsuo, "Spin current generation due to differential rotation", Phys. Rev. B, 111, L060403, https://doi.org/10.1103/PhysRevB.111.L060403

Presentations

  • Tsutomu Kobayashi, "Post-Newtonian limit of Lorentz-violating
scalar-tensor theories", Early Universe and AliCPT Forum, 2024/6/26, online
  • Tsutomu Kobayashi, "Post-Newtonian limit of Lorentz-violating
scalar-tensor theories", 50 Years of Horndeski Gravity: Exploring Modified Gravity, 2024/7/18, Perimeter Institute, Canada
  • Norihiro Tanahashi, "Generalisation of Conformal-Disformal Transformations of the Metric in Scalar-Tensor Theories", Workshop "New Physics from Gravitational Waves", 2024/8/6, Kyoto U., Kyoto, Japan
  • Hirotaka Yoshino, "一様磁場中のブラックホール周辺における荷電スカラー場の振る舞い", 研究会“理論で迫るブラックホール宇宙と時空特異点”, 2024/8/17, Lake Biwa Conference Center, Shiga, Japan
  • Tetsuya Shiromizu, "deSitter時空あれこれ", 研究会“理論で迫るブラックホール宇宙と時空特異点”, 2024/8/17, Lake Biwa Conference Center, Shiga, Japan
  • Tetsuya Shiromizu, "時空の分解とその応用", 原子核三者若手夏の学校, 2024/8/22, National Olympics Memorial Youth Center, Tokyo, Japan
  • Daisuke Yoshida, "Thermodynamics of de Sitter black holes and the cosmic censorship conjecture", QG summer workshop, 2024/08/30, Nagoya University, Nagoya, Japan
  • Daisuke Yoshida, "ドジッター時空におけるブラックホールの熱力学法則と宇宙検閲官仮説", 第25回「特異点と時空, および関連する物理」研究会, 2024/09/05, Meiji University, Kawasaki, Japan
  • Hirotaka Yoshino, "Superradiance", IBS CTPU-CGA, Tokyo Tech, USTC 2024 summer school and workshop on cosmology, gravity, and particle physics, 2024/9/12, Vacation Village Tateyama, Chiba, Japan
  • Daisuke Yoshida, "Thermodynamics of de Sitter black holes", The 3rd young researchers' workshop of the Extreme Universe Collaboration, 2024/09/14, Grand Park Otaru, Otaru, Japan
  • Tsutomu Kobayashi, "Weak-field regime of
higher-order scalar-tensor theories", The Physical Society of Japan 79th Annual Meeting, 2024/9/16, Hokkaido University, Sapporo, Japan
  • Kensuke Sueto, "蒸発しきらない正則ブラックホールの時空構造について", The Physical Society of Japan 79th Annual Meeting, 2024/09/16, Hokkaido University, Hokkaido, Japan
  • Norihiro Tanahashi, "スカラー・テンソル理論におけるconformal/disformal変換の一般化", The Physical Society of Japan 79th Annual Meeting, 2024/9/17, Hokkaido University, Sapporo, Japan
  • Hirotaka Yoshino, "Initial data for a Kaluza-Klein bubble with a black hole", Fourth ExU Annual Meeting, 2024/09/25, Osaka University, Osaka, Japan, poster
  • Keisuke Izumi, "Areal inequality in weak gravity region with Maxwell field", Fourth ExU Annual Meeting, 2024/9/27, Osaka University, Osaka, Japan
  • Hirotaka Yoshino, "Distorted static photon surfaces in electrovacuum spacetimes", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, OIST, Okinawa, Japan, poster
  • Norihiro Tanahashi, "逆関数定理の一般化と高階微分重力理論の生成への応用", 小研究会 「第2回一般相対論と幾何」, 2024/11/19, Nagoya U., Aichi, Japan
  • Keisuke Izumi, "リーマン・ペンローズ不等式の一般化", 多様体上の微分方程式, 2024/11/30, Ishikawa Bunkyo Kaikan, Kanazawa, Japan
  • Masato Nozawa, "Supersymmetry of the Robinson-Trautman solution", The 33rd Workshop on General Relativity and Gravitation in Japan, 2024/12/2, Kindai U., Osaka，Japan, poster
  • Norihiro Tanahashi, "Generalisation of Conformal-Disformal Transformations of the Metric in Scalar-Tensor Theories", The 33rd Workshop on General Relativity and Gravitation in Japan, 2024/12/4, Kindai U., Osaka, Japan
  • Norihiro Tanahashi, "差動回転によるスピン流生成", 第４回学術変革領域「学習物理」物性関係討論会, 2025/1/15, U of Tokyo, Tokyo, Japan
  • Hirotaka Yoshino, "ブラックホールと Kluza-Klein バブルの初期空間", 第９回ブラックホール研究会, 2025/02/03, Rikkyo U., Tokyo, Japan
  • Tetsuya Shiromizu, "正質量定理と宇宙", Encounter with Mathematics, 2025/3/14, Chuho U., Tokyo,Japan
  • Norihiro Tanahashi, "微分方程式ソルバーとしての機械学習", The Physical Society of Japan 79th Annual Meeting, 2025/3/19, online
  • Hirotaka Yoshino, "一様磁場中のシュバルツシルトブラックホール周辺の荷電スカラー場の振る舞い", BH磁気圏研究会2025, 2025/03/26, Gobo Chamber of Commerce and Industry, Wakayama, Japan
  • Hirotaka Yoshino, "Initial data for a Kaluza-Klein bubble with a black string", The 33rd Workshop on General Relativity and Gravitation in Japan, Ki,ndai U. Osaka, Japan, poster

Workshop Organizations

  • 研究会“理論で迫るブラックホール宇宙と時空特異点”, Organized by Hirotaka Yoshino, Osaka Public University, Lake Biwa Conference Center, Hikone, Japan, 2024/8/16-2024/8/18
  • 第二回一般相対論と幾何, T.Shiromizu, S.Yamada, S.Matsuo, K.Izumi, D.Yoshida, Nagoya University, Nagoya, Nagoya, Japan, 2024/11/18-2024/11/19
  • The 33rd workshop on general relativity and gravitation in Japan, 主催, A.Ishibashi, H.Yoshino, M.Nozawa, Kindai U., Osaka Metropolitan University, Osaka Institute of Technology, Kindai University, Osaka , Japan, 2024/12/2-2024/12/6
  • SUPERGRAVITY, M.Nozawa, T.Kimuar, Osaka University of Technology, Osaka, Japan, 2025/2/12-2025/2/13

Outreach

  • Masato Nozawa, Public Relations Brochure, 2024/4, General, Oppenheimer (DVD bonus video translation supervision)
  • Tetsuya Shiromizu, General Lecture-Seminar, 2024/12, General, 240 persons, 西宮湯川記念科学セミナー「極限宇宙の謎に迫る」, Nishinomiya, Japan, https://www.nishi.or.jp/shisei/koho/kishahappyoshiryo/2024/202410/R6yukawasemina-kisya.html
  • Tetsuya Shiromizu, General Lecture-Seminar, 2025/1, General, 30 persons, ブラックホール研究の最前線2025「理論で解説！ブラックホールとは何か?」, 朝日カルチャーセンター, ブラックホール研究の最前線2025 | 新宿教室 | 朝日カルチャーセンター

Awards

  • Norihiro Tanahashi, Phys. Rev. B Editor's suggestion（arXiv:2401.00174）, American Physical Society, 2024/11

Articles for General Public

  • Tetsuya Shiromizu, マルチバースと宇宙の多様性, 数理科学, 2024/6, サイエンス社

Press Release

  • T.Funado, S.Kinoshita, N.Tanahashi, M.Nakamura, M.Matsuo, 2025/02/10, 差動回転によって磁気の流れを生み出す新原理を発見 －磁気回転効果を用いたスピントロニクスデバイスへの応用へ－, Keio University, Nihon University, Chuo University, Press Release, https://www.chuo-u.ac.jp/aboutus/communication/press/2025/02/78852/

Project D01

Papers

  • H. Ebisu, M. Honda and T. Nakanishi, "Foliated BF theories and Multipole symmetries", PRB, 109, 165112, https://doi.org/10.1103/PhysRevB.109.165112
  • D.Suenaga, K.Murakami, E.Itou and K.Iida, "Mass spectrum of spin-one hadrons in dense two-color QCD: Novel predictions by extended linear sigma model", Phys. Rev. D, 109, 74031, https://journals.aps.org/prd/abstract/10.1103/PhysRevD.109.074031
  • D. Ghim, M. Honda, "Digital Quantum Simulation for Spectroscopy of Schwinger Model", PoS LATTICE2023, 213, https://pos.sissa.it/453/213
  • M. Hirasawa, K. Hatakeyama, M. Honda, A. Matsumoto, J. Nishimura and A. Yosprakob, "Determination of the CP restoration temperature at $\theta=\pi$ in 4D SU(2) Yang-Mills theory through simulations at imaginary $\theta$", PoS LATTICE2023, 193, https://pos.sissa.it/453/193
  • K. Kawabata, T. Nishioka, T. Okuda, "Narain CFTs from quantum codes and their Z_2 gauging", JHEP, 2024, 5, 133, https://doi.org/10.1007/JHEP05(2024)133
  • H. Ebisu, M. Honda and T. Nakanishi, "Multipole and fracton topological order via gauging foliated SPT phases", PRR, 6, 023166, https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.6.023166
  • A. Bernamonti, F. Galli and D. Ge, "Boundary-induced transitions in Mobius quenches of holographic BCFT", JHEP, 2024, 6, 184, https://link.springer.com/article/10.1007/JHEP06(2024)184
  • H. Ebisu, M. Honda, T. Nakanishi and S. Shimamori, "Anomaly inflow for dipole symmetry and higher form foliated field theories", JHEP, 2024, 09, 061, https://link.springer.com/article/10.1007/JHEP09(2024)061
  • Kazuki Sakamoto, Hayata Morisaki, Junichi Haruna, Etsuko Itou, Keisuke Fujii, Kosuke Mitarai, "End-to-end complexity for simulating the Schwinger model on quantum computers", Quantum, 8, 1474, https://quantum-journal.org/papers/q-2024-09-17-1474/pdf/
  • E.Itou, A.Matsumoto, Y.Tanizaki, "DMRG study of the theta-dependent mass spectrum in the 2-flavor Schwinger model", JHEP, 2024, 9, 155, https://doi.org/10.1007/JHEP09(2024)155
  • K.Iida, E.Itou, D.Suenaga, K.Murakami, "Lattice study on finite density QC2D towards zero temperature", JHEP, 2024, 10, 22, https://doi.org/10.1007/JHEP10(2024)022
  • T. Okuda, A. Parayil Mana, H. Sukeno, "Anomaly inflow, dualities, and quantum simulation of abelian lattice gauge theories induced by measurements", PRResearch, 6, 43018, https://doi.org/10.1103/PhysRevResearch.6.043018
  • T. Okuda, A. Parayil Mana, H. Sukeno, "Anomaly inflow for CSS and fractonic lattice models and dualities via cluster state measurement", SciPost Phys., 17, 4, 113, https://doi.org/10.21468/SciPostPhys.17.4.113
  • T. Aoyama, T. M. Doi, T. Doi, E. Itou, Y. Lyu, K. Murakami, T. Sugiura (HAL QCD Collaboration), "Scale setting and hadronic properties in the light quark sector with 2+1-flavor Wilson fermions at the physical point", PRD, 110, 94502, https://doi.org/10.1103/PhysRevD.110.094502
  • K. Ando, K. Kawabata, T. Nishioka, "Quantum subsystem codes, CFTs and their Z_2-gaugings", JHEP, 2024, 11, 125, https://link.springer.com/article/10.1007/JHEP11(2024)125
  • M. Honda, R. Jinno and K. Tokeshi, "Exactly solvable stochastic spectator", JCAP, 12, 44, https://iopscience.iop.org/article/10.1088/1475-7516/2024/12/044
  • E.Itou, K.Iida, D.Suenaga, K.Murakami, "Phase and equation of state of finite density QC2D at lower temperature", PoS LATTICE2024, 160, https://doi.org/10.22323/1.466.0160
  • A.Matsumoto, E.Itou, Y.Tanizaki, "Computing theta-dependent mass spectrum of the 2-flavor Schwinger model in the Hamiltonian formalism", PoS LATTICE2024, 210, https://doi.org/10.22323/1.466.0210
  • D. Ge, T. Nishioka, S. Shimamori, "Localized RG flows on composite defects and C-theorem", JHEP, 2024, 2, 12, https://link.springer.com/article/10.1007/JHEP02(2025)012
  • M. Hirasawa, M. Honda, A. Matsumoto, J. Nishimura and A. Yosprakob, "Numerical evidence for a CP broken deconfined phase at $\theta =\pi$ in 4D SU(2) Yang-Mills theory through simulations at imaginary $\theta$", PoS LATTICE2024, 407, https://pos.sissa.it/466/407

Presentations

  • Masazumi Honda, "Resurgence in Lorentzian quantum cosmology: no-boundary saddles and resummation of quantum gravity corrections around tunneling saddle", Seminar at OIST, 2024/4/19, OIST, Japan
  • Masazumi Honda, "Resurgence in Lorentzian quantum cosmology: no-boundary saddles and resummation of quantum gravity corrections around tunneling saddle", Resurgence and Modularity in QFT and String Theory, 2024/4/29, Galileo Galilei Institute, Italy
  • Etsuko Itou, "Three ways of calculating mass spectra in the Hamiltonian formalism", HEP/QIS Forum, 2024/5, FermiLab (online), online
  • Takuya Okuda, "Measurement-based quantum simulation of lattice gauge theories and anomaly inflow", Seminar at KEK, 2024/5/14, KEK, Japan
  • Etsuko Itou, "Calculating composite-particle spectra in Hamiltonian formalism of gauge theories", Japan-US-Taiwan Particle Physics Workshop, 2024/6, National Taiwan University, Taiwan
  • Masazumi Honda, "JT gravity with matter on quantum computer", Holography in Beijing 2024, 2024/7/3, Kavli ITS, University of Chinese Academy of Sciences, Chian
  • Masazumi Honda, "JT gravity with matter on quantum computer", Nihon U. Seminar, 2024/7/5, Nihon U., Japan
  • Etsuko Itou, "ハミルトニアン形式のゲージ場の理論の 第一原理計算について", 場の理論と弦理論2024, 2024/8, YITP, Kyoto University, Japan
  • Etsuko Itou, "Phase and equation of state of finite density QC2D at lower temperature", The 41th International Conference on Lattice field theory (LATTICE 2024), 2024/8, University of Liverpool, UK
  • Masazumi Honda, "Digital Quantum Simulation for Energy Spectroscopy of Schwinger Model", XVIth Quark Confinement and the Hadron Spectrum, 2024/8/22, Cairns convention center, Australia
  • Etsuko Itou, "Applications of quantum computation and tensor networks to lattice gauge theory", Current and Future Computational Approaches to Quantum Many-Body Systems 2024 (CompQMB2024), 2024/9, ISSP, Kashiwa Campus, Univ. Tokyo, Japan
  • Etsuko Itou, "より低温における２カラーQCD相図と 状態方程式の決定", The Physical Society of Japan 79th Annual Meeting, 2024/9, Hokkaido University, Japan
  • Etsuko Itou, "Applications of quantum computation and tensor networks to lattice gauge theories", RIKEN - LBNL Workshop on Quantum Information Science, 2024/9, Lawrence Berkeley National Laboratory, アメリカ
  • Masazumi Honda, "JT gravity with matter on quantum computer", QuantHEP 2024, 2024/9/4, Ludwig Maximilian University of Munich, ドイツ
  • Masazumi Honda, "Resurgence in Lorentzian quantum cosmology: no-boundary saddles and resummation of quantum gravity corrections around tunneling saddles", KIAS Korea-France Joint Workshop, 2024/9/25, KIAS, Koria
  • Etsuko Itou, "Applications of quantum computation and tensor networks to lattice gauge theory", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10, OIST, Japan
  • Etsuko Itou, "Introduction to Lattice QCD", YITP long-term workshop Hadrons and Hadron Interactions in QCD 2024 (HHIQCD2024), 2024/10, YITP, Kyoto U., Japan
  • Etsuko Itou, "Lattice results for the speed of sound in dense QCD-like theories", Compact Stars in the QCD Phase diagram (CSQCD2024), 2024/10, YITP, Kyoto University, Japan
  • Takuya Okuda, "Anomaly inflow for lattice models based on Calderbank-Shor-Steane codes", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, OIST, Japan
  • Masazumi Honda, "Resurgence in Lorentzian quantum cosmology", East Asian Joint Workshop on Fields and strings, 2024/11/21, National Sun Yat-sen University, Taiwan
  • Etsuko Itou, "Calculating mass spectrum of composite states in the Hamiltonian formalism", High Energy Physics in Quantum Era, 2024/12, KEK, Japan
  • Tatsuma Nishioka, "Quantum error correction and holography", KEK-Theory workshop 2024, 2024/12/12, KEK, Japan
  • Masazumi Honda, "Application of Quantum Computation to Quantum FIeld Theory", Saitama U. Seminar, 2024/12/19, Saitama U., Japan
  • Etsuko Itou, "Hamiltonian formulation of lattice gauge theories and its application to quantum computation", Joint Symposium on Basic Sciences of “Toyama Accelerated Research Program” 2024, 2025/1, Urbannet Kanda Conference, Japan, Japan
  • Etsuko Itou, "符号問題が生じる場の理論の古典量子計算法の開発", Public Symposium of JST-PRESTO “Quantum Information Processing”, 2025/2, National Museum of Emerging Science and Innovation, Japan, Japan
  • Masazumi Honda, "Resummations of divergent series", Asymptotics in Astrophysics iTHEMS Workshop, 2025/2/25, RIKEN Kobe, Japan
  • Etsuko Itou, "New computational methods in lattice gauge theory - quantum computation and tensor networks -", The 21st International Conference on Hadron Spectroscopy and Structure (HADRON2025), 2025/3, Osaka University, Japan
  • Etsuko Itou, "Calculating mass spectra for the two-flavor Schwinger model in the Hamiltonian formalism", Lattice and Continuum Approaches to Strongly Coupled QFT, 2025/3, KITP UC Santa BARBARA, USA
  • Etsuko Itou, "New configuration set of HAL QCD collaboration", SCALE SETTING: PRECISION LATTICE QCD FOR PARTICLE AND NUCLEAR PHYSICS, 2025/3, ECT*, Italy
  • Tatsuma Nishioka, "Holography for de Sitter gravity", KMI2025 : The 6th KMI International Symposium, 2025/3/7, Nagoya U., Japan

Workshop Organizations

  • iTHEMS-YITP Workshop: Bootstrap, Localization and Holography, host, Masazumi Honda, Yu Nakayama, RIKEN iTHEMS, YITP, YITP, Kyoto, Kyoto, Japan, 2024/5/20-2024/5/24
  • 西宮湯川記念国際滞在型研究会 "Hadrons and Hadron Interactions in QCD 2024", host, Etsuko Itou, 京都大学, YITP, Kyoto, Kyoto, Japan, 2024/10/14-2024/11/15

Outreach

  • Masazumi Honda, General Lecture-Seminar, 2024/10/5, General, 理化学研究所[和光地区]一般公開2024 講演会「量子コンピュータで宇宙の始まりを探る」, 理化学研究所, https://openday.riken.jp/lecture/

Awards

  • Masazumi Honda, 令和７年度 文部科学大臣表彰 若手科学者賞, 文部科学省, 2025/04

Articles for General Public

  • Etsuko Itou, 格子ゲージ理論の最前線, 数理科学2025年2月号, 2025/2, サイエンス社

Press Release

  • H. Ebisu, M. Honda and T. Nakanishi, 2024/05/16, 新たな種類のエニオンを系統的に作る方法を発見―量子コンピュータへの新たな応用の可能性―, Kyoto University and RIKEN Public Relations (press release), https://www.kyoto-u.ac.jp/ja/research-news/2024-05-16
  • Etsuko Itou, 2024/10/01, 量子コンピュータによるシュウィンガー模型の効率的シミュレーション方法を開発, Osaka University/Kyoto University Public Relations (Press Release), https://www.kyoto-u.ac.jp/ja/research-news/2024-10-01-0
  • Etsuko Itou, 2024/10/01, 複合粒子の性質を探る新しい計算手法を開発―符号問題に阻まれた物理現象の解明に向けて―, Kyoto University Public Relations (Press Release), https://www.kyoto-u.ac.jp/ja/research-news/2024-10-01
  • Honda, Masazumi and Matsui, Hiroki and Okabayashi, Kazumasa and Terada, Takahiro, 2024/10/8, 量子宇宙の創生と宇宙の波動関数の厳密な計算―無境界仮説とトンネル仮説の長年の論争解決に向けた大きな一歩―, Kyoto University, RIKEN, Nagoya University Public Relations (press release), https://www.kyoto-u.ac.jp/ja/research-news/2024-10-17-0

Project D02

Papers

  • Ryo Watanabe, Keisuke Fujii, Hiroshi Ueda, "Variational quantum eigensolver with embedded entanglement using a tensor-network ansatz", Phys. Rev. Research, 6, 2, 23009, https://doi.org/10.1103/PhysRevResearch.6.023009
  • Hidehiro Saito, Chisa Hotta, "Exact matrix product states at the quantum Lifshitz tricritical point in a spin-1/2 zigzag-chain antiferromagnet with anisotropic -term", Phys.Rev. Lett. 132, 166701, https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.166701
  • Tsubasa Ichikawa, Hideaki Hakoshima, Koji Inui, Kosuke Ito, Ryo Matsuda, Kosuke Mitarai, Koichi Miyamoto, Wataru Mizukami, Kaoru Mizuta, Toshio Mori, Yuichiro Nakano, Akimoto Nakayama, Ken N. Okada, Takanori Sugimoto, Souichi Takahira, Nayuta Takemori, Satoyuki Tsukano, Hiroshi Ueda, Ryo Watanabe, Yuichiro Yoshida, Keisuke Fujii, "Current numbers of qubits and their uses", Nature Reviews Physics, 6, 345-347, https://doi.org/10.1038/s42254-024-00725-0
  • Atsushi Iwaki, Chisa Hotta, "Sample complexity of matrix product states at finite temperature", Physical Review B, 109, 224410, 10.1103/physrevb.109
  • Hidehiro Saito, Chisa Hotta, "Phase diagram of the quantum spin- Heisenberg- model on a frustrated zigzag chain", Physical Review B, 110, 24409, 10.1103/PhysRevB.110.024409
  • Kouichi Okunishi, Tomotoshi Nishino, "Holographic analysis of boundary correlation functions for the hyperbolic-lattice Ising model", Progress of theoretical and experimental physics, 2024, 9, 093A02, 10.1093/ptep/ptae137
  • Nanse Esaki, Yutaka Akagi, and Hosho Katsura, "Electric field induced thermal Hall effect of triplons in the quantum dimer magnets XCuCl3 (X=Tl, K)", Physical Review Research, 6, 3, L032050, 10.1103/PhysRevResearch.6.L032050
  • Tomonori Shirakawa, Hiroshi Ueda, Seiji Yunoki, "Automatic quantum circuit encoding of a given arbitrary quantum state", Phys. Rev. Research, 6, 33259, https://doi.org/10.1103/PhysRevResearch.6.033259
  • Ryo Watanabe, Hiroshi Ueda, "Automatic Structural Search of Tensor Network States including Entanglement Renormalization", Phys. Rev. Research, 6, 33259, https://doi.org/10.1103/PhysRevResearch.6.033259
  • Alice Marche, Hironobu Yoshida, Alberto Nardin, Hosho Katsura, Leonardo Mazza, "Universality and two-body losses: Lessons from the effective non-Hermitian dynamics of two particles", Physical Review A, 110, 3, 33321, 10.1103/PhysRevA.110.033321
  • Masaya Kunimi, Takafumi Tomita, Hosho Katsura, Yusuke Kato, "Proposal for realizing quantum spin models with Dzyaloshinskii-Moriya interaction using Rydberg atoms", Physical Review A, 110, 4, 43312, 10.1103/PhysRevA.110.043312
  • Haruki Watanabe, Hosho Katsura, and Jong Yeon Lee, "Spontaneous breaking of U(1) symmetry at zero temperature in one dimension", Physical Review Letters, 133, 17, 176001, 10.1103/PhysRevLett.133.176001
  • Masafumi Udagawa, Hiroki Nakai, Chisa Hotta, "Pinch-point spectral singularity from the interference of topological loop states", Physical Review B, 110, L201109, 10.1103/PhysRevB.110.L201109
  • Yuta Sakai, Chisa Hotta, "Diffusive dynamics of fractionalized particles and the enhanced conductivity at the border of the neutral-ionic transition", Physical Review B, 110, 174306, https://journals.aps.org/prb/abstract/10.1103/PhysRevB.110.174306
  • Masaya Nakagawa, Hosho Katsura, Masahito Ueda, "Exact eigenstates of multicomponent Hubbard models: SU(N) magnetic η pairing, weak ergodicity breaking, and partial integrability", Physical Review Research, 6, 4, 43259, 10.1103/PhysRevResearch.6.043259
  • Shohei Miyakoshi, Takanori Sugimoto, Tomonori Shirakawa, Seiji Yunoki, Hiroshi Ueda, "Diamond-shaped quantum circuit for real-time quantum dynamics in one dimension", Phys. Rev. Research, 6, 43318, https://doi.org/10.1103/PhysRevResearch.6.043318
  • Soshun Ozaki, Hosho Katsura, "Disorder-Free Sachdev-Ye-Kitaev models: Integrability and a precursor of chaos", Physical Review Research, 7, 1, 13092, 10.1103/PhysRevResearch.7.013092
  • Hidehiro Saito, Chisa Hotta, "Cluster-projected matrix product state: framework for engineering exact quantum many-body ground states in one and two dimensions", Physical Review Research, 7, 13086, https://link.aps.org/doi/10.1103/PhysRevResearch.7.013086
  • Atis Yosprakob, Kouichi Okunishi, "Tensor renormalization group study of the three-dimensional SU(2) and SU(3) gauge theories with the reduced tensor network formulation", Progress of Theoretical and Experimental Physics, 2025, 3, 033B06, 10.1093/ptep/ptaf028
  • Sourabh Saha, Hosho Katsura, Manoranjan Kumar, "Phase diagram of a coupled trimer system at half filling using the Hubbard model", Physical Review B, 111, 9, 94425, 10.1103/PhysRevB.111.094425
  • Kenji Harada, Tsuyoshi Okubo, and Naoki Kawashima, "Tensor tree learns hidden relational structures in data to construct generative models", Machine Learning: Science and Technology, 6, 25002, 10.1088/2632-2153/adc2c7
  • Hosho Katsura, Chihiro Matsui, Chiara Paletta, Balazs Pozsgay, "Weak ergodicity breaking with isolated integrable sectors", Physical Review Research, 7, 2, 023099, 10.1103/PhysRevResearch.7.023099

Presentations

  • S. Miyakoshi, T. Sugimoto, T. Shirakawa, S. Yunoki, H. Ueda, "Partial Singular Value Decomposition: A Variational Quantum Algorithm", Quantinuum Spring 2024 Training Session, 2024/5/23, Tokyo, Japan, poster
  • Chisa Hotta, "Thermal pure matrix product state and thermal mixed quantum states", CompQu online seminar at National Center for Theoretical Sciences, 2024/5/29, online
  • Chisa Hotta, "Quantum Lifshitz critical point and gapless nematic singlet phase of the spin 1/2 model featuring YbCuS2", Neel Institute Seminar, 2024/6/13, Grenoble, France
  • Chisa Hotta, "Framework for engineering exact quantum many-body ground states in one and two dimensions", Trends in the Theory of Quantum Materials2024, 2024/6/18, Briffur, Switzerland
  • Chisa Hotta, "Framework for engineering exact quantum many-body ground states in one and two dimensions", Munich TU Theory Seminar, 6/21/2024, Munich, Germany
  • Chisa Hotta, "Cluster-projected matrix product state: exact solutions for frustration-free models", Taipei University miniworkshop, 2024/8/1, Taiwan
  • Chisa Hotta, "Toward finding an optimal local density matrix in quantum many-body systems", 2024 international summer school and workshop on Strongly correlated physics– Numerical and Analytical approaches, 2024/8/8, Taiwan
  • N.Hatano, H.Katsura, K.Kawabata, "ベーテ格子上の非エルミート系の量子輸送：ランダムネスの効果", The Physical Society of Japan 79th Annual Meeting, 2024/09/16, Hokkaido University, Japan
  • A.Marche, H.Yoshida, Alberto Nardin, Hosho Katsura, and Leonardo Mazza, "二体ロスのあるボゾン系の二体問題に現れる普遍性", The Physical Society of Japan 79th Annual Meeting, 2024/09/17, Hokkaido University, Japan
  • M.Kunimi, T.Tomita, H.Katsura, Y.Kato, "漸近的量子多体傷跡状態に由来するperfect revival", The Physical Society of Japan 79th Annual Meeting, 2024/09/17, Hokkaido University, Japan
  • S.Miyagashira, T.Sugimoto, H.Ueda, "密度行列繰り込み群を用いた新規量子回路最適化手法の開発", The Physical Society of Japan 79th Annual Meeting, 2024/9/17, Hokkaido University, Japan, poster
  • R.Ezaki, Y.Akagi, H.Katsura., "Maple Leaf/Star 格子上でのスピンダイマー系におけるトポロジカルトリプロンの熱ホール効果", The Physical Society of Japan 79th Annual Meeting, 2024/09/18, Hokkaido University, Japan
  • T.Kaise, K.Okunishi, "S=1ハイゼンベルク鎖の基底状態に対する角度時間発展の数値解析", The Physical Society of Japan 79th Annual Meeting, 2024/09/18, Hokkaido University, Japan
  • T.Hikihara, H.Ueda, K.Okunishi, K.Harada, T.Nishino, "ネットワーク構造最適化を含んだツリーテンソルネットワーク法の性能評価", The Physical Society of Japan 79th Annual Meeting, 2024/09/18, Hokkaido University, Japan
  • K.Okunishi, T.Nishino, "双曲格子イジング模型の縁スピン相関関数とホログラフィー", The Physical Society of Japan 79th Annual Meeting, 2024/09/19, Hokkaido University, Japan
  • Ryo Watanabe, Hiroshi Ueda, "Automatic structural search of tensor network states including entanglement renormalization", 22nd International Conference on Recent Progress in Many-Body Theories (RPMBT22), 2024/9/24, Tukuba, Japan, poster
  • Chisa Hotta, "Finite temperature charge dynamics near the phase boundary", International Symposium on Crystalline Organic Metals, Superconductors and Magnets (ISCOM) 2024, 2024/9/25, USA
  • S. Miyakoshi, T. Sugimoto, H. Ueda, "Formulation of Quantum Circuit Optimization Technique Based on Density Matrix Renormalization Group", Workshop on Quantum software, middleware, and controller for near-term quantum computing systems, 2024/10/17, Toyonaka, Japan, poster
  • Chisa Hotta, "Cluster-projected matrix product state", ExU-OIST workshop "Quantum Extreme Universe: Matter, Information, and Gravity.", 2024/10/21, Okinawa, Japan
  • Takuma Kaise, Kouichi Okunishi, "Numerical analysis of the angular-time evolution for the S=1 Heisenberg chain", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, OIST, Okinawa, Japan, poster
  • Atis Yosprakob, "Toward tensor renormalization group study of quantum chromodynamics", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/21, OIST, Okinawa, Japan, poster
  • Kouichi Okunishi, "Holographic analysis of boundary correlation functions for the hyperbolic lattice Ising model", Quantum Extreme Universe: Matter, Information, and Gravity, 2024/10/25, OIST, Okinawa, Japan
  • Atis Yosprakob, "Toward tensor renormalization group study of lattice gauge theory", Laboratory Seminar, 2024/10/30, Faculty of Science, Kyoto University, Kyoto, Japan
  • Chisa Hotta, "固体物質中のグラス", ISSP Short-term Workshop, 2024/10/31, Japan
  • Chisa Hotta, "Frustration-free models and matrix product state solutions", AIP theoretica physics, 2024/11/7, online, Australia
  • Hosho Katsura, "Integrable SYK-like models", Rigorous Statistical Mechanics and Related Topics, 2024/11/11, Kyoto U., Japan
  • Atis Yosprakob, "Toward tensor renormalization group study of lattice QCD", Tensor Network 2024, 2024/11/15, Nishinoki-Geihinkan, Ishikawa, Japan
  • Chisa Hotta, "Amplitude-waves of magnetic moments due to dipole-quadrupole hybridization", ISSP Residency WS "Correlated Quantum Materials + beyond: Symposium", 2024/11/25, Japan
  • T.Kanada, K.Fujii, H.Ueda, "粒子数を保存するランダム量子回路におけるLXEBを用いた忠実度の推定", 51st Quantum Information Technology Conference (QIT51), 2024/11/27, Takamatsu, Japan
  • Atis Yosprakob, "Tensor renormalization group study of 3D Yang-Mills theories with the reduced tensor network formulation", KEK-THEORY Workshop 2024, 2024/12/11, KEK, Tsukuba, Japan
  • Hiroshi Ueda, "Advancements in Numerical Methods: Synergy of Tensor Networks and Quantum Algorithms", KEK-THEORY Workshop 2024, 2024/12/13, Tukuba, Japan
  • Chisa Hotta, "Cluster-projected matrix product state", Tensor Network States: Algorithms and Applications, 2024/12/17, Hong Kong
  • S. Miyakoshi, T. Sugimoto, H. Ueda, "Density Matrix Renormalization Group-Based Approach for Quantum Circuit Optimization", QIP2025, 2025/2/25, Raleigh, NC, USA, poster
  • Chisa Hotta, "カゴメ磁性体の理論（レビュー講演）", 物性研短期研究会カゴメフラストレート磁性研究の進展, 2025/3/10, Japan
  • S. Miyakoshi, T. Sugimoto, H. Ueda, "Quantum Circuit Optimization Algorithm Inspired by Density Matrix Renormalization Group", APS march meeting 2025, 2025/3/17, Anaheim, CA, USA
  • M.Kunimi, H.Katsura, Y.Kato, "漸近的量子多体傷跡状態の系統的な構成法と超対称性量子力学との関係2", The Physical Society of Japan 2025 Spirng Meeting, 2025/03/18, online, Japan
  • H.Nakai, C.Hotta, "擬スピン1スピネル磁性体における双極子-四極子混成によるスピン振幅波", The Physical Society of Japan 2025 Spring Meeting, 2025/3/18, Japan
  • A.Kubota, M.Kawano, C.Hotta, "ハイパーオクタゴン格子上の磁性体の有効模型", The Physical Society of Japan 2025 Spring Meeting, 2025/3/18, Japan
  • H.Saito, C.Hotta, "Cluster-Projected MPSによる数値全対角化の拡張", The Physical Society of Japan 2025 Spring Meeting, 2025/3/18, Japan
  • S.Shimozono, C.Hotta, "熱的純粋行列積状態のダイナミクス", The Physical Society of Japan 2025 Spring Meeting, 2025/3/18, Japan
  • Nanse Esaki, Yutaka Akagi, Hosho Katsura, "Spin Nernst and thermal Hall effects of topological triplons in quantum dimer magnets on the maple-leaf and star lattices", APS Global Physics Summit 2025, 2025/03/19, Anaheim Convention Center, Anaheim, USA,.
  • M.Kunimi, H.Katsura, Y.Kato, "漸近的量子多体傷跡状態の系統的な構成法と超対称性量子力学との関係1", The Physical Society of Japan 2025 Spring Meeting, 2025/03/19, online, Japan
  • S.Ozaki, T.Mitsumoto, C.Hotta, "LiVS2における軌道-磁性-格子結合模型の導出", The Physical Society of Japan 2025 Spring Meeting, 2025/3/19, Japan
  • S.Ozaki, T.Mitsumoto, C.Hotta, "LiVS2の秩序化相転移とスローダイナミクス", The Physical Society of Japan 2025 Spring Meeting, 2025/3/19, Japan
  • K.Harada, T.Okubo, N.Kawashima, "ツリーテンソルネットワークを用いた生成モデルにおけるテンソル・ネットワーク最適化", The Physical Society of Japan 2025 Spring Meeting, 2025/3, online, Japan
  • Y.Sakai, C.Hotta, "TTF-CAにおける非相反伝導に関する古典モンテカルロダイナミクス", The Physical Society of Japan 2025 Spring Meeting, 2025/3/20, Japan
  • S.Miyakoshi, T.Sugimoto, H.Ueda, "密度行列繰り込み群に基づく積層型量子回路最適化手法の提案", The Physical Society of Japan 2025 Spring Meeting, 2025/3/20, online, Japan
  • William Faugno, Hosho Katsura, and Tomoki Ozawa, "Quantum Many Body Scars from Emergent Chiral Symmetry in the Density-Difference-Dependent Gauge Field", APS Global Physics Summit 2025, 2025/03/21, Anaheim Convention Center, Anaheim, USA
  • T.Iwasak, H.Katsura, "1次元Hubbard模型における非線形Drude重みの解析", The Physical Society of Japan 2025 Spring Meeting, 2025/03/21, online, Japan
  • T.Seki, H.Katsura, "乱れのない量子breakdown模型：厳密解とダイナミクス", The Physical Society of Japan 2025 Spring Meeting, 2025/03/21, online, Japan
  • Kouichi Okunishi, "MPS decomposition of MC snapshots and its entanglement spectrum", 計算科学の新展開：TNスキームと量子・古典融合, 2025/3/27, APイノゲートOsaka, Osaka, Japan
  • Hiroshi Ueda, "多体系の解析を対象とした量子アルゴリズムにおける テンソルネットワーク法の有用性", 計算科学の新展開：TNスキームと量子・古典融合, 2025/3/27, AP Innogate Osaka, Osaka, Japan

Workshop Organizations

  • Focus Week on Non-equilibrium Quantum Dynamics, co-host, Hosho Katsura, The University of Tokyo, Kavli IPMU, Kashiwa, Japan, 2024/9/30-2024/10/4

Outreach

  • Kouichi Okunishi, General Lecture-Seminar, 2024/12/14, General, 物質中に広がる小宇宙―スピンで見る物質と量子情報の世界―, 極限宇宙市民講演会, https://www2.yukawa.kyoto-u.ac.jp/~extremeuniverse/public_talk/

Articles for General Public

  • J.Iwaki, C.Hotta, 熱的量子状態をどう理解するか, 固体物理60, 2025/2, アグネ出版
  • Chisa Hotta, サイン二乗変形とその応用（その1）, 固体物理60, 2025/3, アグネ出版

Press Release

  • Hosho Katsura, 2024/10/25, 連続対称性の自発的破れを示す１次元スピン模型の発見, University of Tokyo Press Release, https://www.s.u-tokyo.ac.jp/ja/press/10552/

Project E01

Papers

  • Yoichi Kageyama, Asato Onishi, Cédric Bareille, Kousuke Ishida, Yuta Mizukami, Shigeyuki Ishida, Hiroshi Eisaki, Kenichiro Hashimoto, Toshiyuki Taniuchi, Shik Shin, Hiroshi Kontani, and Takasada Shibauchi, "Coherence Length of Electronic Nematicity in Iron-Based Superconductors", Journal of the Physical Society of Japan, 93, 103702, https://doi.org/10.7566/JPSJ.93.103702
  • Takuya Nagashima, Kota Ishihara, Kumpei Imamura, Masayuki Kobayashi, Masaki Roppongi, Kohei Matsuura, Yuta Mizukami, Romain Grasset, Marcin Konczykowski, Kenichiro Hashimoto, Takasada Shibauchi, "Lifting of Gap Nodes by Disorder in Tetragonal FeSe1−𝑥⁢S𝑥 Superconductors", Physical Review Letters, 133, 156506, https://doi.org/10.1103/PhysRevLett.133.156506
  • Kaito Watanabe, Ryuji Takagi, "Black Box Work Extraction and Composite Hypothesis Testing", Physical Review Letters, 133, 250401, https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.133.250401
  • Oliver Hahn, Giulia Ferrini, Ryuji Takagi, "Bridging Magic and Non-Gaussian Resources via Gottesman-Kitaev-Preskill Encoding", PRX Quantum, 6, 10330, https://journals.aps.org/prxquantum/abstract/10.1103/PRXQuantum.6.010330
  • Shengjie Fang, Kumpei Imamura, Yuta Mizukami, Ryuichi Namba, Kota Ishihara, Kenichiro Hashimoto, and Takasada Shibauchi, "Field-Angle-Resolved Specific Heat in Na2⁢Co2⁢Te⁢O6: Evidence against Kitaev Quantum Spin Liquid", Physical Review Letters, 134, 106701, https://doi.org/10.1103/PhysRevLett.134.106701

Presentations

  • Yuta Mizukami, "量子スピン液体におけるスピンの分数化；マヨラナ粒子と非可換エニオン", 第93回スピントロニクス専門研究会, 2024/06, Tohoku U., Japan
  • Yuta Mizukami, "Evolution of transport and thermodynamic properties in FeSe1-xTex superconductors" Iron-based Superconductors: Advances towards applications 2025 (IBS2app 2025), 2025/2/15, Miyazaki Sea Gaia, Japan

Awards

  • Yuta Mizukami, 令和6年度科学技術分野文部科学大臣表彰若手科学者賞, 文部科学省, 2024/4

Press Release

  • Yuta Mizukami, 2024/10/11, 東大と東北大, 鉄系超伝導体における「第4の超伝導状態」の特異な超伝導特性とその不安定性を解明, Nihon Keizai Shimbun https://www.nikkei.com/article/DGXZRSP680041_R11C24A0000000/
  • Yuta Mizukami, 2025/3/17, 東大と東北大, 量子スピン液体の検証方法を確立, Nihon Keizai Shimbun, https://www.nikkei.com/article/DGXZRSP688412_X10C25A3000000/

Project E02

Papers

  • Zhenyu Xiao, Ryuichi Shindou, and Kohei Kawabata, "Universal hard-edge statistics of non-Hermitian random matrices", Phys. Rev. Research, 6, 2, 023303, https://doi.org/10.1103/PhysRevResearch.6.023303
  • Masahiro Nozaki, Kotaro Tamaoka, Mao Tian Tan, "Inhomogeneous quenches as state preparation in two-dimensional conformal field theories", Phys.Rev.D, 12, 126014, 10.1103/PhysRevD.109.126014
  • Yuya Kusuki, Kotaro Tamaoka, Zixia Wei, Yasushi Yoneta, "Efficient Simulation of Low Temperature Physics in One-Dimensional Gapless Systems", Phys.Rev.B, 4, L041122, 10.1103/PhysRevB.110.L041122
  • T.Hirotani,A.Matsumura,Y.Nambu,K.Yamamoto, "Large violation of Leggett-Garg inequalities with coherent-state projectors for a harmonic oscillator and chiral scalar field", Phys.Rev.A, 110, 22217, 10.1103/PhysRevA.110.022217 I.
  • G. Budiutama, S. Daimon, H. Nishi, R. Kaneko, T. Ohtsuki, Y. Matsushita, "Channel attention for quantum convolutional neural networks", Physical Review A, 110, 1, 12447, 10.1103/PhysRevA.110.012447
  • Weibo Mao, Masahiro Nozaki, Kotaro Tamaoka, Mao Tian Tan, "Local operator quench induced by two-dimensional inhomogeneous and homogeneous CFT Hamiltonians", JHEP, 7, 200, 10.1007/JHEP07(2024)200
  • Y.Osawa,K-N. Lin,Y.Nambu, M.Hotta,P.Chen, "Final burst of the moving mirror is unrelated to the partner mode of analog Hawking radiation", Phys.Rev. D, 110, 25023, 10.1103/PhysRevD.110.025023 I.
  • Hidetoshi Omiya, Takuya Takahashi, Takahiro Tanaka, Hirotaka Yoshino, "Deci-Hz gravitational waves from the self-interacting axion cloud around a rotating stellar mass black hole", PRD, 110, 44002, 10.1103/PhysRevD.110.044002
  • Akihiro Miyata, Masahiro Nozaki, Kotaro Tamaoka, Masataka Watanabe, "Hawking-Page and entanglement phase transition in 2d CFT on curved backgrounds", JHEP, 8, 190, 10.1007/JHEP08(2024)190
  • R. Kaneko, S. Goto, and I. Danshita, "Ground-state phase diagram of the SU⁡(4) Heisenberg model on a plaquette lattice", Physical Review A, 110, 1, 23326, 10.1103/PhysRevA.110.023326
  • Y. Ashida, S. Furukawa, M. Oshikawa, "System-environment entanglement phase transitions", Phys. Rev. B, 110, 9, 94404, https://doi.org/10.1103/PhysRevB.110.094404
  • Y. Nakamura, R. Kaneko, and I. Danshita, "Surface criticality in the mixed-field Ising model with sign-inverted next-nearest-neighbor interaction", Physical Review A, 110, 1, 33319, 10.1103/PhysRevA.110.033319
  • M.Tomonaga,Y.Nambu, "Second-Order Coherence as an Indicator of Quantum Entanglement of Hawking Radiation in Moving-Mirror Models", Phys.Rev.D, 110, 105004, 10.1103/PhysRevD.110.105004 I.
  • Takanori Anegawa, Kotaro Tamaoka, "Black Hole Singularity and Timelike Entanglement", JHEP, 10, 182, 10.1007/JHEP10(2024)182
  • Takuya Takahashi, Hidetoshi Omiya, Takahiro Tanaka, "Self-interacting axion clouds around rotating black holes in binary systems", PRD, 110, 104038, 10.1103/PhysRevD.110.104038
  • Hiroki Takeda, Takahiro Tanaka, "Strong lensing of gravitational waves with modified propagation", PRD, 110, 104050, 10.1103/PhysRevD.110.104050
  • R.Yoshimoto, Y.Nambu, "Hawking radiation in quantum Hall system with an expanding edge: Application of anomaly method", Phys. Lett. A, 529, 130100, https://doi.org/10.1016/j.physleta.2024.130100 Received
  • M. Fontaine, S. Furukawa, "Phase diagram of a spin-1/2 Heisenberg ladder with a chirality-chirality interaction", J. Phys. Soc. Jpn., 93, 124710, https://doi.org/10.7566/JPSJ.93.124710
  • Takafumi Kakehi, Takahiro Tanaka, "Extending the Hamiltonian formulation of particle motion in perturbed Kerr spacetime to various time parametrizations", PRD, 110, 124031, 10.1103/PhysRevD.110.124031
  • Y. Hamada, G. J. Loges, "Enumerating 6D supergravities with T ≤ 1", JHEP, 12, 167, 10.1007/JHEP12(2024)167
  • Shu Hamanaka, Tsuneya Yoshida, and Kohei Kawabata, "Non-Hermitian Topology in Hermitian Topological Matter", Phys. Rev. Lett., 133, 26, 266604, https://doi.org/10.1103/PhysRevLett.133.266604
  • T. Morimoto, E. Morikawa, K. Nihongi, T. Kida, Y. Narumi, Z. Honda, S. Furukawa, Y. Uwatoko, K. Kindo, M. Hagiwara, "High-field magnetism of the spin-1/2 two-leg-ladder antiferromagnet Cu(DEP)Cl2 under high pressure", J. Phys. Soc. Jpn., 94, 24701, https://doi.org/10.7566/JPSJ.94.024701
  • Shu Hamanaka and Kohei Kawabata, "Multifractality of the many-body non-Hermitian skin effect", Phys. Rev. B, 111, 3, 035144, https://doi.org/10.1103/PhysRevB.111.035144
  • R. Kaneko, M. Imada, Y. Kabashima, T. Ohtsuki, "Forecasting long-time dynamics in quantum many-body systems by dynamic mode decomposition", Physical Review Research, 7, 1, 13085, 10.1103/PhysRevResearch.7.013085
  • Y. Hamada, M. Takeuchi, "Swampland bounds on magnetized extra dimensions", JHEP, 1, 136, 10.1007/JHEP01(2025)136
  • Y. Hamada, A. Ishige, "Investigating 9d/8d non-supersymmetric branes and theories from supersymmetric heterotic strings", JHEP, 1, 141, 10.1007/JHEP01(2025)141
  • Ze Chen, Kohei Kawabata, Anish Kulkarni, and Shinsei Ryu, "Field theory of non-Hermitian disordered systems", Phys. Rev. B, 111, 5, 054203, https://doi.org/10.1103/PhysRevB.111.054203
  • Y,Kaku,Y.Nambu, "Gravitational entanglement witness through Einstein ring image", Phys.Rev. D, 111, 46026, 10.1103/PhysRevD.111.046026
  • R. Kaneko, D. Kagamihara, and I. Danshita, "Entanglement entropy dynamics of non-Gaussian states in free boson systems: random sampling approach", Physical Review A, 111, 3, 32412, 10.1103/PhysRevA.111.032412

Presentations

  • Ryui Kaneko, "Proposal for realizing quantum many-body scars in the Bose-Hubbard system with strong three-body losses", Quantum Simulation of Novel Phenomena with Ultracold Atoms and Molecules, 2024/4, Kyoto U., Kyoto , Japan
  • T. Shimokawa, "実験的に測定可能な量子もつれ測度を用いた量子スピン液体の数値的研究", 物性研究所スパコン共同利用・CCMS合同研究会「計算物質科学の現在と未来」, 2024/4/3, Institute for Solid State Physics, The University of Tokyo, Chiba, Japan
  • Takahiro Tanaka, "Large gauge transformation, dN and IR divergence", One-day workshop on gravity and cosmology, 2024/04/04, ITP, Beijing, China
  • Yuta Hamada, "Monopole-fermion scattering and flavor hierarchy", Symmetric Mass Generation, Topological Phases and Lattice Chiral Gauge Theories, 2024/05, Simons Center for Geometry and Physics, Stony Brook, USA
  • Ryui Kaneko, "量子多体系の実時間発展のテンソルネットワーク法による計算と機械学習手法による予測", Online CMT seminars, 2024/5
  • Takahiro Tanaka, "Extended δN", Cosmology and Astrophysics in the Gravitational Wave Astronomy Era, 2024/05/07, Aristotle University of Thessaloniki, Tessaloniki, Greek
  • Kohei Kawabata, "Hermitian Bulk – Non-Hermitian Boundary Correspondence", Recent Developments and Challenges in Topological Phases, 2024/06, YITP, Kyoto University, Kyoto, Japan
  • Yuta Hamada, "Toward quantitative Swampland physics", NITEP Theoretical Physics Seminar Series, 2024/06, online
  • Ryui Kaneko, "Predicting long-time dynamics of quantum many-body systems by dynamic mode decomposition", Trends in the Theory of Quantum Materials (TTQM2024), 2024/6, University of Fribourg, Fribourg, Switzerland
  • Ryui Kaneko, "Future Forecast of Quantum Matter: Long-Time Behavior Predicted from Short-Time Experimental or Theoretical Data via Dynamic Mode Decomposition", Superstripes 2024, Quantum Complex Matter, 2024/6, The Conference Centre of the Hotel Continental Ischia, Ischia, Naples, Italy
  • Takahiro Tanaka, "Some steps for second order radiation reaction", Capra Meeting on Radiation Reaction in General Relativity, 2024/06/18, NUS, Singapore
  • Yuta Hamada, "Exploring the Landscape/Swampland of 6d supergravity", The Landscape vs. the Swampland, 2024/07, Erwin Schrödinger International Institute for Mathematical Physics, Vienna, Austria
  • Kohei Kawabata, "Symmetry classification of non-Hermitian random matrices and open quantum systems", Dynamics Days Asia Pacific 13, 2024/07, YITP, Kyoto University, Kyoto, Japan
  • T. Shimokawa, S. Sabharwal and N. Shannon, "Can experimentally-accessible measures of entanglement distinguish quantum spin liquid and random singlet states?", International conference on magnetism 2024, 2024/7/4, Palazzo della Cultura e dei Congressi, Bologna, Italy
  • M. Fontaine, K. Sugimoto, S. Furukawa, "Symmetry, topology, duality, chirality, and criticality in a spin-1/2 XXZ ladder with a four-spin interaction", SUN2024 : SU(N) physics in quantum many-body systems: theory, experiment, and numerics, 2024/7/11, Tohoku University, Sendai, Japan, poster
  • T. Shimokawa, S. Sabharwal and N. Shannon, "Can experimentally accessible entanglement measures distinguish quantum spin liquid and random singlet states?", The international conference on New Frontiers in Adcanced Magnetism 2024, 2024/8/7, Hokkaido Univ., Sapporo, Japan
  • Kohei Kawabata, "Lieb-Schultz-Mattis Theorem in Open Quantum Systems", Conference of Condensed Matter Physics 2024, 2024/08/07, Yangtze River Delta Physics Research Center, Liyang, China
  • Takahiro Tanaka, "Hawking radiation of Interacting Field - Beyond BH localized on the RSII braneworld –", New Physics from Gravitational waves, 2024/08/07, Kyoto U., Kyoto, Japan
  • Takahiro Tanaka, "ブラックホールをめぐる疑問", 中尾憲一教授還暦記念研究会, 2024/08/16, Lake Biwa Conference Center, Hikone, Japan
  • Yuta Hamada, "非超対称なブレーンと弦理論", これまでとこれからの, 素粒子と弦の現象論, 2024/09, Hokkaido University, Sapporo, Japan
  • Gekko Budiutama, "チャネル注意機構による量子ニューラルネットワークの性能向上の理論", The Physical Society of Japan 79th Annual Meeting, 2024/9, Hokkaido University, Sapporo
  • Ryui Kaneko, "動的モード分解による量子多体系の長時間ダイナミクス予測", The Physical Society of Japan 79th Annual Meeting,2024/9, Hokkaido University, Sapporo
  • Ryui Kaneko, "多層型銅酸化物超伝導体の第一原理計算：多変数変分モンテカルロ法を用いた解析", The Physical Society of Japan 79th Annual Meeting, 2024/9, Hokkaido University, Sapporo
  • Ryui Kaneko, "Condensed matter physics: from magnetism to quantum spin liquid", The 3rd young researchers' workshop of the Extreme Universe Collaboration and The 6th "Extreme Universe" School, 2024/9, Grand Park Otaru, Otaru, Japan
  • Ryui Kaneko, "Tensor-network study of the SU(4) Heisenberg model", Fourth Extreme Universe Annual Meeting, 2024/9, Osaka University, Osaka, Japan
  • Kohei Kawabata, "Non-Hermitian Topology in Hermitian Topological Matter: Wannier Localizability and Detachable Topological Boundary States", Non-Hermitian topology, geometry and symmetry across physical platforms, 2024/09/20, Simons Center for Geometry and Physics, Stony Brook, USA
  • Takahiro Tanaka, "Hawking radiation of Interacting Field - Beyond BH localized on the RSII braneworld –", 4th ExU Annual Meeting, 2024/09/25, Osaka University, Osaka, Japan
  • T. Shimokawa, "What can we learn about quantum magnets from experimentally accessible entanglement measures?", Extreme universe 4th annual meeting, 2024/9/26, Osaka Univ., Toyonaka, Japan
  • Kohei Kawabata, "Non-Hermitian Topology in Hermitian Topological Matter: Wannier Localizability and Detachable Topological Boundary States", Focus Week on Non-equilibrium Quantum Dynamics, 2024/10/03, IPMU, Chiba, Japan
  • Yasusada Nambu, "量子もつれ，量子性，古典性", 量子センシング研究会, 2024/10/9, Yamaguchi U., Yamaguchi, Japan
  • Yasusada Nambu, "Application of partner formula: entanglement and entropy in deSitter universe", Matter, information and gravity, 2024/10/25, OIST, Okinawa, Japan
  • Ryui Kaneko, "量子多体問題への機械学習手法の応用", 第18回 物性科学領域横断研究会 (領域合同研究会), 2024/11, Kobe U., Kobe, Japan
  • T. Shimokawa, "Can experimentally-accessible measures of entanglement distinguish quantum spin liquid and random singlet states?", From Quantum Materials to Quantum Information: Symposium on Trans-Scale Quantum Science and Quantum Materials Synthesis, 2024/11/13, OIST, Onna, Japan
  • Kohei Kawabata, "Symmetry classification of non-Hermitian random matrices and open quantum systems", Random Operators and Related Topics 2024, 2024/11/17, Tohoku U., Sendai, Japan
  • T. Shimokawa, "What can we learn about quantum magnets from experimentally-accessible entanglement measures?", 第20回量子スピン系研究会, 2024/12/14, Akita Art Village, Akita, Japan
  • Shunsuke Furukawa, "量子多体系における測定と場の理論", 場の理論の新しい計算方法2024, 2024/12/17, Komaba II Campus, The University of Tokyo, Tokyo, Japan
  • Takahiro Tanaka, "ブラックホール観測から素粒子物理へ", ミニワークショップ “ボトムアップ素粒子・重力融合理論と宇宙観測”, 2024/12/19, Niigata University Ekinan Campus Tokimeito, Niigata, Japan
  • Takahiro Tanaka, "Hawking radiation of interacting fields", Gravity 2025, 2025/01/29-30, YITP, Kyoto U, Kyoto, Japan
  • Takahiro Tanaka, "Scope of Gravitational Wave Physics", Sixth International conference on Emerging Trends in Mathematical Sciences ＆Computing, 2025/02/08, Kolkata, India
  • Takahiro Tanaka, "What was the issue about the loop correction in Ultra-slow-roll inflation?", 分野横断天体物理学研究会, 2025/02/12, Bikinosato Hotel Bikki, Gero, Japan
  • Mizuki Hamada, Shunsuke Furukawa, "スピン梯子系におけるトポロジカルエンタングルメントスワッピング", サスティナブル量子AI研究拠点第5回全体会議, 2025/2/28, Keio U., Yokohama, Japan, poster
  • Ryui Kaneko, "量子相分類と量子ダイナミクスへの機械学習手法の応用", The Physical Society of Japan 2025 Spring Meeting, 2025/3
  • Ryui Kaneko, "Predicting long-time quantum dynamics from short-time experimental or theoretical data via dynamic mode decomposition", Joint March Meeting and April Meeting: Global Physics Summit 2025, 2025/3, Anaheim Convention Center, Anaheim, California, America
  • Takahiro Tanaka, "Does the scalar force affect BH-NS binaries?", Gravitational waves Related workshop in Western Japan, 2025/03/05, Kotohira Onsen Kotosankaku, Kotohira, Japan
  • T. Shimokawa, S. Sabharwal and N. Shannon, "Can experimentally accessible entanglement measures distinguish quantum spin liquid and random singlet states?", APS Global Physics Summit, 2025/3/17, Anaheim convention center, Anaheim, USA
  • Mizuki Hamada, Shunsuke Furukawa, "スピン梯子系におけるトポロジカルエンタングルメントスワッピング", The Physical Society of Japan 2025 Spring Meetign, 2025/3/20, online
  • Kohei Kawabata, "量子測定下の非ユニタリーダイナミクスの対称性とトポロジー", 統計物理学懇談会, 2025/3/25, online, online
  • Yasusada Nambu, "Unruh効果とその検証", ブラックホール磁気圏研究会, 2025/3/26, Gobo JCI, Wakayama, Japan

Workshop Organizations

  • 素粒子物理学の進展2024, K.Yagyu et al., Osaka University, YITP, Kyoto University, Kyoto, Japan, 2024/08/19-2024/08/23
  • KEK-THEORY Workshop 2024, J.Nishimra et al., KEK, Tsukuba，Japan, 2024/12/11-2024/12/13
  • 計算物理春の学校2024, H.Matsunaga et al,., Okinawa, Japan, 2024/3/11-2024/3/15
  • KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2025winter), R.Kitano et al., KEK, Tsukuba，Japan, 2025/02/18-2025/02/21
  • 計算物理春の学校2025, Y.Ishida et al., Okinawa, Japan, 2025/3/10-2025/3/14

Outreach

  • Shunsuke Furukawa, Classes for elementary, middle, and high school students, 2024/08/28, 夏休み研究体験「量子コンピュータ体験」, Keio U.
  • Shunsuke Furukawa, Classes for elementary, middle, and high school students, 2025/03/10, 科学入門講座「物性物理学における相転移とトポロジー」, Keio Shonan Fujisawa Middle and High School

Awards

  • Kohei Kawabata, Research Front Awards, Clarivate (formerly Thomson Reuters), 2024/5, https://clarivate.com/ja/blog/clarivate-japan-announces-5th-japan-research-front-award/
  • Kohei Kawabata, Reviewer Excellence Award (Physical Review B), American Physical Society, 2024/10, https://promo.aps.org/reviewer-excellence
  • Kohei Kawabata, 3rd (2025) AAPPS-JPS Award, AAPPS (Association of Asia Pacific Physical Societies)・The Physical Society of Japan, 2024/12, https://www.jps.or.jp/activities/awards/aapps-jps_award/aapps-jps-2025-3.php

Articles for General Public

  • Y.Matsumura, Y.Nambu, K.Yamamoto, 量子系が作る重力とその検証への歩み, The Physical Society of Japan, 2024/5, The Physical Society of Japan
  • Kohei Kawabata, Topological Order Intrinsic to Mixed Quantum States, Physics, 2025/01, American Physical Society, https://physics.aps.org/articles/v18/9

Joint Activities

Workshop Organizations

  • ExU International Conference "Quantum extreme universe: matter, information and gravity", OIST, Okinawa, Oct.21-25, 2024, https://groups.oist.jp/exu-oist
  • The 4th ExU Annual Meeting of the Extreme Universe Collaboration, Osaka University, Sep.25-28, 2024, https://groups.oist.jp/exu-oist
  • The 3rd young researchers' workshop of the Extreme Universe Collaboration & The 6th "Extreme Universe" School @Grand Park Otaru in Hokkaido, Sep.12-15, 2024, https://sites.google.com/view/the-3rd-young-researchers-work/home