Rchr
J-GLOBAL ID：200901056215437365   Update date: Nov. 05, 2024

Okunishi Kouichi

オクニシ コウイチ | Okunishi Kouichi
Affiliation and department：
Niigata University Faculty of Science Department of Physics

About Niigata University Faculty of Science Department of Physics


Research field  (2)： Mathematical physics and basic theory ,  Magnetism, superconductivity, and strongly correlated systems
Research keywords  (4)： 磁性 ,  統計物理学 ,  Magnetism ,  Statistical Physics
Research theme for competitive and other funds  (23)：
  • 2021 - 2026 The Natural Laws of Extreme Universe--A New Paradigm for Spacetime and Matter from Q uantum Information
  • 2021 - 2026 Quantum many-body systems and tensor networks from quantum information perspectives
  • 2017 - 2021 Energy-scale controlling of quantum many-body systems and entanglemet renormalization
  • 2014 - 2018 Entanglement controle in quantum many-body systems by non-local transfromation and negative sign problem
  • 2013 - 2018 Optimization of tensor network state using higher order singular value decomposition
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Papers (112)：
  • Kouichi Okunishi, Tomotoshi Nishino. Holographic Analysis of Boundary Correlation Functions for the Hyperbolic-Lattice Ising Model. Progress of Theoretical and Experimental Physics. 2024
  • Toshiya Hikihara, Hiroshi Ueda, Kouichi Okunishi, Kenji Harada, Tomotoshi Nishino. Visualization of Entanglement Geometry by Structural Optimization of Tree Tensor Network. arXiv:2401.16000. 2024
  • Toru Sakai, Masaru Hashimoto, Tomoki Houda, Rito Furuchi, Hiroki Nakano, Kiyomi Okamoto, Kouichi Okunishi. Translational Symmetry Broken Magnetization Plateau of the Spin-1/2 Ferromagnetic and Antiferromagnetic Bond-Alternating Spin Chain with Competing Anisotropies. New Physics: Sae Mulli. 2023. 73. 1131-1134
  • Tôru Sakai, Kiyomi Okamoto, Kouichi Okunishi, Masaru Hashimoto, Tomoki Houda, Rito Furuchi, Hiroki Nakano. Translational symmetry broken magnetization plateau of the S=1 antiferromagnetic Heisenberg chain with competing anisotropies. Physical Review B. 2023. 108. 17
  • Atis Yosprakob, Jun Nishimura, Kouichi Okunishi. A new technique to incorporate multiple fermion flavors in tensor renormalization group method for lattice gauge theories. Journal of High Energy Physics. 2023. 2023. 11
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MISC (211)：
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Books (2)：
  • Transfer matrix approach to classical systems(共著)
    Springer, Berlin 1999
  • density matrix renormalization for classical lattice models(共著)
    Springer, Berlin 1997
Lectures and oral presentations  (6)：
  • A low-energy effective model for the S=1/2 Kagome-triangular-strip Heisenberg model
    (ICM2018 SanFrancisco 2018)
  • サイン2乗変形と運動量
    (日本物r学会年次大会 2018)
  • Sine-square deformation and Mobius quantization of 2D CFTs
    (2017)
  • Sine-square defomrantion and Mobius quantization for 2D CFT
    (TNSAA Taiwan 2016)
  • Sine-Square deformation and Mobius qunatization in 2D CFT
    (Quantum Information in String Theory and Many-body Systems, Yukawa Institute 2016)
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Education (2)：
  • - 1999 Osaka University
  • - 1999 Osaka University Graduate School, Division of Natural Science
Professional career (1)：
  • (BLANK) (Osaka University)
Work history (5)：
  • 2011/02 - 現在 Niigata University
  • 2000/11 - 2011/01 - 新潟大学理学部助手
  • 1999/04 - 2000/10 日本学術振興会特別研究員(PD)
  • 2000 - - Niigata University, Research assistant
  • 1996/04 - 1999/03 日本学術振興会特別研究員(DC1)
Awards (1)：
  • 2010 - 日本物理学会 日本物理学会領域3若手奨励賞
Association Membership(s) (2)：
THE SOCIETY OF ELECTRON SPIN SCIENCE AND TECHNOLOGY ,  日本物理学会
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