Recent Papers

2015-

• Semiclassical origin of asymmetric nuclear fission: Nascent-fragment shell effect in periodic-orbit theory
  Ken-ichiro Arita, Takatoshi Ichikawa and Kenichi Matsuyanagi
  Physica Scripta 95 (2020) 024003 (special issue on Nuclear Shapes and Symmetries) .
  (arXiv:1906.11794, RIKEN-NC-NP-193), PDF file
• Nascent fragment shell effects on the nuclear fission processes in semiclassical periodic orbit theory
  Ken-ichiro Arita, Takatoshi Ichikawa and Kenichi Matsuyanagi
  Phys. Rev. C 98 (2018) 064311.
  (arXiv:1809.02320, RIKEN-NC-NP-188), PDF file
• Time-dependent density-functional description of nuclear dynamics
  Takashi Nakatsukasa, Kenichi Matsuyanagi, Masayuki Matsuo, and Kazuhiro Yabana
  Rev. Mod. Phys. 88 (2016) 045004.
  (arXiv:1606.04717, RIKEN-NC-NP-168), PDF file
• Quantal rotation and its coupling to intrinsic motion in nuclei
  Takashi Nakatsukasa, Kenichi Matsuyanagi, Masayuki Matsuzaki, and Yoshifumi R Shimizu
  Phys. Scr. 91 (2016) 073008, Invited Comment in Focus Issue of Physica Scripta
  to celebrate the 40-year anniversary of the 1975 Nobel Prize to A. Bohr, B. R. Mottelson and L. J. Rainwater.
  (arXiv:1605.01876, RIKEN-NC-NP-164), PDF file
• Microscopic derivation of the Bohr-Mottelson collective Hamiltonian and its application to quadrupole shape dynamics
  Kenichi Matsuyanagi, Masayuki Matsuo, Takashi Nakatsukasa, Kenichi Yoshida, Nobuo Hinohara, and Koichi Sato
  Phys. Scr. 91 (2016) 063014, selected as `Paper of the Week.'
  Invited Comment in Focus Issue of Physica Scripta
  to celebrate the 40-year anniversary of the 1975 Nobel Prize to A. Bohr, B. R. Mottelson and L. J. Rainwater.
  (arXiv:1606.08547, RIKEN-NC-NP-166), PDF file
• Microscopic derivation of the quadrupole collective Hamiltonian for shape coexistence/mixing dynamics
  K. Matsuyanagi, M. Matsuo, T. Nakatsukasa, K. Yoshida, N. Hinohara and K. Sato
  Focus Issue on "Shape Coexistence in Atomic Nuclei,"
  J. Phys. G 43 (2016) 024006.
  (arXiv:1507.03709, RIKEN-NC-NP-157), PDF file
• Universal damping mechanism of quantum vibrations in deep sub-barrier fusion reactions,
  T. Ichikawa and K. Matsuyanagi
  Phys. Rev. C 92 (2015) 021602(R), highlighted as `editors' suggestion.'
  (arXiv:1506.07963, RIKEN-NC-NP-156), PDF file

  2010-2014

• High-spin torus isomers and their precession motions
  T. Ichikawa, K. Matsuyanagi, J.A. Maruhn, and N. Itagaki
  Phys. Rev. C 90 (2014) 034314.
  (arXiv:1408.0360), PDF file
• Quadrupole shape dynamics from the viewpoint of a theory of large-amplitude collective motion
  Proceedings of the 20th Nuclear Physics Workshop "Marie and Pierre Curie",
  Kazimierz, September 2013 (presented by M. Matsuo) [Physica Scripta 89 (2014) 054020]
  (arXiv:1401.1010), PDF file
• Pure collective precession motion of a high-spin torus isomer
  T. Ichikawa, K. Matsuyanagi, J.A. Maruhn, and N. Itagaki
  Phys. Rev. C 89 (2014) 011305(R).
  (arXiv:1311.3775), PDF file
• Damping of quantum vibrations revealed in deep sub-barrier fusion
  T. Ichikawa and K. Matsuyanagi
  Phys. Rev. C 88 (2013) 011602(R).
  (arXiv:1302.7115v2), PDF file
• Existence of exotic torus configuration in high-spin excited states of 40Ca
  T. Ichikawa, J.A. Maruhn, N. Itagaki, K. Matsuyanagi, P.-G. Reinhard, \\and S. Ohkubo
  Phys. Rev. Lett.109 (2012) 232503.
  (arXiv:1207.6250), PDF file
• Shape transition and fluctuations in neutron-rich Cr isotopes around N=40
  Koichi Sato, Nobuo Hinohara, Kenichi Yoshida, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Phys. Rev. C 86 (2012) 024316.
  (arXiv:1205.6111), PDF file
• BCS-pairing and nuclear vibrations
  Kenichi Matsuyanagi, Nobuo Hinohara and Koichi Sato
  ``Fifty years of Nuclear BCS," eds. R. Broglia and V. Zelevinsky (World Scientific, 2013), chapter 9, p.111.
  (arXiv:1205.0078), PDF file
• Shape fluctuations in the ground and excited 0+ states of 30,32,34Mg
  Nobuo Hinohara, Koichi Sato, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Phys. Rev. C 84 (2011) 061302(R).
  (arXiv:1109.2060), PDF file
• Microscopic description of large-amplitude shape-mixing dynamics with local QRPA inertial functions
  Nobuo Hinohara, Koichi Sato, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Phys. Rev. C 82 (2010) 064313.
  (arXiv:1004.5544), PDF file
• Open problems in microscopic theory of large-amplitude collective motion
  K. Matsuyanagi, M. Matsuo, T. Nakatsukasa, N. Hinohara and K. Sato
  Special Issue on ``Open problems in nuclear structure theory",
  J. Phys. G: Nucl. Part. Phys. 37 (2010) 064018.
  (arXiv:1001.2956, RIKEN-NC-NP-40), PDF file 　
• Simple} Model Analysis of Triaxial Deformation Dynamics in Oblate-Prolate Shape Coexistence Phenomena
  Koichi Sato, Nobuo Hinohara, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Prog. Theor. Phys. 123 (2010) 129.
  (arXiv:0912.1920, RIKEN-NC-NP-41), PDF file 　

  2005-2009

• Microscopic description of oblate-prolate shape mixing in proton-rich Se isotopes
  Nobuo Hinohara, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Phys. Rev. C 80 (2009) 014305.
  (arXiv:0902.3131v2[nucl-th], YITP-09-15, RIKEN-NC-NP-33), PDF file 　
• Rotational Frequency Dependence of Octupole Vibrations on Superdeformed States in 40Ca
  H. Ogasawara, K. Yoshida, M. Yamagami, S. Mizutori and K. Matsuyanagi
  Prog. Theor. Phys. 121 (2009) 357. PDF file 　
• Triaxiality Dependence of Octupole Excitations on Superdeformed States in 44Ti
  H. Ogasawara, K. Yoshida, M. Yamagami, S. Mizutori and K. Matsuyanagi
  Prog. Theor. Phys. 120 (2008) 1169. PDF file 　
• Gamow-Hartree-Fock-Bogoliubov Method: Representation of quasiparticles with Berggren sets of wave functions
  N. Michel, K. Matsuyanagi and M. Stoitsov
  Phys. Rev. C 78 (2008) 044319.
  (arXiv:0806.4296), PDF file 　
• Microscopic Derivation of Collective Hamiltonian by Means of the Adiabatic Self-Consistent Collective Coordinate Method
  ----- Shape Mixing in Low-lying States of 68Se and 72Kr -----
  Nobuo Hinohara, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Prog. Theor. Phys. 119 (2008) 59.
  (arXiv:0711.1292), PDF file 　
• Microscopic Dynamics of Shape Coexistence Phenomena around 68Kr and 72Kr
  Talk at Hoi An, Vietnam (presented by N. Hinohara).
  (arXiv:0709.3897), PDF file 　
• A New Efficient Method of Hartree-Fock-Bogoliubov Calculation for Weakly Bound Nuclei
  M. Stoitsov, N. Michel and K. Matsuyanagi
  Phys. Rev. C 77 (2008) 054301.
  (arXiv:0709.1006), PDF file 　
• Gauge-Invariant Formulation of Adiabatic Self-Consistent Collective Coordinate Method
  Nobuo Hinohara, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Prog. Theor. Phys. 117 (2007) 451.
  (nucl-th/0701004), PDF file 　
• Pairing and continuum effects on low-frequency quadrupole vibrations in deformed Mg isotopes close to the neutron drip line
  K. Yoshida, M. Yamagami and K. Matsuyanagi
  Nucl. Phys. A 779 (2006) 99.
  (nucl-th/0605073), PDF file 　
• Mixed Representation RPA Calculation for Octupole Excitations on Superdeformed Sates
  in the 40Ca and Neutron-Rich Sulfur Regions
  T. Inakura, H. Imagawa, Y. Hashimoto, S. Mizutori, M. Yamagami and K. Matsuyanagi
  Nucl. Phys. A 768 (2006) 61.
  (nucl-th/0512058), PDF file 　
• Effects of Time-Odd Components in Mean Field on Large Amplitude Collective Dynamics
  Nobuo Hinohara, Takashi Nakatsukasa, Masayuki Matsuo and Kenich Matsuyanagi
  Prog. Theor. Phys. 115 (2006) 567.
  (nucl-th/0511086), PDF file 　
• Dynamical pairing effects on low-frequency modes of excitation in deformed Mg isotopes close to the neutron drip line
  Talk at the Nilsson05 Conf., Lund (presented by K. Yoshida).
  (nucl-th/0507047), PDF file 　
• Precession modes on high-K configurations: Non-collective axially-symmetric limit of wobbling motion
  Talk at the Nilsson05 Conf., Lund (presented by Y. R. Shimizu).
  (nucl-th/0507045), PDF file 　
• High-K Precession Modes: Axially Symmetric Limit of Wobbling Motion
  Yoshifumi R. Shimizu, Masayuki Matsuzaki and Kenichi Matsuyanagi
  Phys. Rev. C 72 (2005) 014306.
  (nucl-th/0412074), PDF file 　
• Comparative Study of Octupole Excitations on Superdeformed States in 32S, 36S, 40Ca and 50S
  Kenichi Yoshida, Masayuki Yamagami and Kenichi Matsuyanagi
  Prog. Theor. Phys. 113 (2005) 1251. PDF file 　
• Collective Path Connecting the Oblate and Prolate Shapes in 68Se and 72Kr
  Suggested by the Adiabatic Self-Consistent Collective Coordinate Method
  Masato Kobayasi, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Prog. Theor. Phys. 113 (2005) 129.
  (nucl-th/0412062), PDF file 　

  1998-2004

• Collective Path Connecting the Oblate and Prolate Local Minima in 68Se
  Masato Kobayasi, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Prog. Theor. Phys. 112 (2004) 363.
  (nucl-th/0405039), PDF file
• Microscopic Study of Wobbling Motions in Hf and Lu Nuclei
  Talk at the Fifth Japan-China Joint Nuclear Physics Symposium, Fukuoka (presented by Y. R. Shimizu).
  (nucl-th/0404063), PDF file 　
• Nuclear Moment of Inertia and Wobbling Motions in Triaxial Superdeformed Nuclei
  Masayuki Matsuzaki, Yoshifumi R. Shimizu and Kenichi Matsuyanagi
  Phys. Rev. C 69(2004) 034325.
  (nucl-th/0310052), PDF file 　
• Superdeformed Bands in Neutron-Rich Sulfur Isotopes suggested by Cranked Skyrme-Hartree-Fock Calculations
  T. Inakura, S. Mizutori, M. Yamagami and K. Matsuyanagi
  Nucl. Phys. A 728 (2003) 52.
  (nucl-th/0306087), PDF file 　
• Application of the Adiabatic Self-consistent Collective Coordinate Method to a Solvable Model of Prolate-Oblate Shape Coexistence
  Masato Kobayasi, Takashi Nakatsukasa, Masayuki Matsuo and Kenichi Matsuyanagi
  Prog. Theor. Phys. 110 (2003) 65.
  (nucl-th/0304051), PDF file 　
• Mean-Field Approach to Superdeformed High-Spin States in 40Ca and Neutron-Rich 50S Regions
  Talk at Aizu-Wakamatsu.
  (nucl-th/0212101), PDF file 　
• Periodic Orbits and Deformed Shell Structure
  Talk at fns2002, Berkeley.
  (nucl-th/020877), PDF file 　
• Symmetry Breaking and Bifurcations in the Periodic Orbit Theory: II. Spheroidal Cavity
  A.G. Magner, K. Arita, S.N. Fedotkin and K. Matsuyanagi
  Prog. Theor. Phys. 108 (2002) 853.
  (nlin.SI/0208005), PDF file 　
• Cranked Skyrme-Hartree-Fock calculation for superdeformed and hyperdeformed rotational bands in N=Z Nuclei from 32S to 48Cr
  T. Inakura, S. Mizutori, M. Yamagami and K. Matsuyanagi
  Nucl. Phys. A 710 (2002) 261.
  (nucl-th/0207044), PDF file 　
• Wobbling Motion in Atomic Nuclei with Positive-Gamma Shapes
  M. Matsuzaki, Y.R. Shimizu and K. Matsuyanagi
  Phys. Rev. C 65 (2002) 041303(R).
  (nucl-th/0201012), PDF file 　
• Periodic-Orbit Bifurcations and Superdeformed Shell Structure
  A.G. Magner, S.N. Fedotkin, K. Arita, K. Matsuyanagi and M. Brack
  Phys. Rev. E 63(2001) 065201(R).
  (nlin.SI/0101035), PDF file 　
• Symmetry-Unrestricted Skyrme-Hartree-Fock-Bogoliubov Calculations for Exotic Shapes in N=Z Nuclei from 64Ge to 84Mo
  M. Yamagami, K. Matsuyanagi and M. Matsuo
  Nucl. Phys. A 693 (2001) 579.
  (nucl-th/0010087), PDF file 　
• Diabatic Mean-Field Description of Rotational Bands in Terms of the Selfconsistent Collective Coordinate Method
  Y.R. Shimizu and K. Matsuyanagi
  Prog. Theor. Phys. Supplement No. 141 (2001) 285.
  (nucl-th/0008005), PDF file 　
• Bifurcation of Periodic Orbit as Semiclassical Origin of Superdeformed Shell Structure
  Talk at the Nobel Symposium on Quantum Chaos Y2K. PDF file 　
• Symmetry-unresticted Skyrme-HFB Calculations for Exotic Shapes in Proton-Rich N=Z Nuclei in the A=60-80 Region
  Talk at Pingst2000, Lund. PDF file
• Adiabatic Selfconsistent Collective Coordinate Method for Large Amplitude Collective Motion in Superconducting Nuclei
  M. Matsuo, T. Nakatsukasa and K. Matsuyanagi
  Prog. Theor. Phys. 103 (2000) 959.
  (nucl-th/0001056, YITP-00-2), PDF file
• High-spin yrast structure of 32S suggested by symmetry-unrestricted, cranked Hartree-Fock calculations
  M. Yamagami and K. Matsuyanagi
  Nucl. Phys. A 672 (2000) 123.
  (nucl-th/9908060), PDF file
• Symmetry Breaking and Bifurcations in the Periodic Orbit Theory: I. Elliptic Billiard
  A.G. Magner, S.N. Fedotkin, K. Arita, T. Misu, K. Matsuyanagi, T. Schachner and M. Brack
  Prog. Theor. Phys. 102 (1999) 551.
  (nucl-th/9906023), PDF file 　
• Exotic Shapes in S32 suggested by the Symmetry-Unrestricted Cranked Hartree-Fock Calculations
  Talk at the Nuclear Structure '98, Gatlinburg.
  (nucl-th/9809038), PDF file 　
• Semiclassical Origin of Superdeformed Shell Structure in the Spheroidal Cavity Model
  K. Arita, A. Sugita and K. Matsuyanagi
  Prog. Theor. Phys. 100 (1998) 1223.
  (nucl-th/9809005), PDF file 　
• Periodic-Orbit Bifurcation and Shell Structure at Exotic Deformation
  Talk at Int. Symp. on New Spectroscopy and Nuclear Structure 1997, Copenhagen.
  (nucl-th/9709065), PDF file 　
• Periodic-Orbit Bifurcation and Shell Structure in Reflection-Asymmetric Deformed Cavity
  A. Sugita, K. Arita and K. Matsuyanagi
  Prog. Theor. Phys. 100 (1998) 597. PDF file