{"id":515,"date":"2021-11-10T13:51:25","date_gmt":"2021-11-10T04:51:25","guid":{"rendered":"https:\/\/www2.yukawa.kyoto-u.ac.jp\/~extremeuniverse\/?p=515"},"modified":"2026-04-03T18:46:02","modified_gmt":"2026-04-03T09:46:02","slug":"outline-of-project-b02","status":"publish","type":"post","link":"https:\/\/www2.yukawa.kyoto-u.ac.jp\/~extremeuniverse\/en\/outline-of-project-b02\/","title":{"rendered":"Outline of Project B02"},"content":{"rendered":"

Understanding quantum black holes through the study of artificial quantum matter (21H05185)<\/h2>\n
\n
Principal Investigator: Masaki Tezuka<\/div>\n
\"\"<\/div>\n<\/div>\n

A black hole gradually evaporates into thermal radiation, which is called the Hawking radiation, and finally disappears. This means that whatever information thrown into a black hole will eventually be \u201clost\u201d. However, this contradicts the unitary time evolution, with the information on the initial state being conserved, in quantum mechanics. This apparent contradiction is called the \u201cblack hole information loss paradox\u201d. Clarifying the mechanism by which information appears to be lost is one of the major objectives of this research area which aims to construct a theory of the \u201cextreme universe\u201d that integrates quantum theory and gravity theory.
\nThe aim of group B02 is to promote the study of the quantum features of black holes, one of the key issues of the \u201cextreme universe\u201d, through the collaboration of cold atom experiments and theoretical studies. According to the gauge\u2013gravity correspondence, the evaporation process of a black hole could correspond to the dynamics of a quantum matter.
\nTherefore, we will elucidate the nature of black holes by experimentally investigating the non-equilibrium dynamics of cold atomic systems in the laboratory which is a highly-controllable artificial quantum matter.
\nWe will experimentally and theoretically perform research on (I) measurement-induced quantum phase transitions due to the effects of dissipation and\/or measurement and (II) out-of-time-ordered correlation as the characterization of the delocalization of quantum information in cold atomic systems. In parallel, we will develop the theory for non-equilibrium phase transitions, methods for calculating non-equilibrium states using quantum computers, and evaluate the quantum entanglement in quantum many-body systems that are thought to correspond to quantum black holes and gauge gravity, such as the Sachdev-Ye-Kitaev model.<\/p>\n

\"\"<\/p>\n

Members in B02<\/h3>\n

[Principal Investigator]<\/strong>
\nMasaki Tezuka<\/a> Department of Physics, Kyoto University<\/p>\n

[Co-Investigator]<\/strong>
\nShuta Nakajima<\/a> Center for Quantum Information and Quantum Biology, Osaka University
\nEriko Kaminishi<\/a> Faculty of Science and Technology, Seikei University
\nTakashi Mori<\/a> Department of Physics, Keio University
\nDaisuke Yamamoto<\/a> Department of Physics, Nihon University<\/p>\n

[International Research Collaborators]<\/strong><\/p>\n

[ExU Postdoctoral Fellows(Research Collaborators)]<\/strong>
\nKazuya Yamashita Center for Quantum Information and Quantum Biology, Osaka University
\nGiacomo Marmorini<\/span> Department of Physics, Nihon University
\n<\/strong><\/p>\n

[Research Collaborators]<\/strong>
\nIppei Danshita<\/a> Department of Physics, Kindai University
\nKazuaki Takasan Department of Applied Physics, University of Tokyo
\nKazuki Yamamoto Department of Physics, Osaka Metropolitan University
\nTanay Pathak Department of Physics, Kyoto University
\n <\/strong><\/p>\n

[Graduate Students]<\/strong>
\nJuan Pablo Bayona Pena YITP, Kyoto University
\nYuki Miyazaki Graduate School of Science and Engineering, Aoyama Gakuin University
\nHonami Fukushima College of Humanities and Sciences, Nihon University
\n\n<\/p>\n

[Past members]
\n<\/strong>Kou Gondaira Graduate School of Science and Engineering, Aoyama Gakuin University
\n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

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