Updated on 2025/07/16

写真a

 
OKUNISHI KOUICHI
 
Organization
Graduate School of Science Department of Physics Professor
School of Science Department of Physics
Title
Professor
Affiliation
Institute of Science
Affiliation campus
Sugimoto Campus

Position

  • Graduate School of Science Department of Physics 

    Professor  2025.04 - Now

  • School of Science Department of Physics 

    Professor  2025.04 - Now

Degree

  • 博士(理学) （ Osaka University ）

Research Areas

  • Natural Science / Mathematical physics and fundamental theory of condensed matter physics  / テンソルネットワーク、量子エンタングルメント

  • Natural Science / Magnetism, superconductivity and strongly correlated systems  / 量子スピン系

  • Natural Science / Magnetism, superconductivity and strongly correlated systems

  • Natural Science / Mathematical physics and fundamental theory of condensed matter physics

Research Interests

  • quantum information physics

  • 統計物理学

  • 磁性

  • Statistical Physics

  • Magnetism

Research subject summary

  • 量子情報にもとづく量子多体系の理論的研究

  • 量子スピン系の理論的研究

Professional Memberships

  • 日本物理学会

  • 電子スピンサイエンス学会

  • THE SOCIETY OF ELECTRON SPIN SCIENCE AND TECHNOLOGY

  • 日本物理学会

Awards

  • 日本物理学会領域３若手奨励賞

Job Career (off-campus)

  • Osaka Metropolitan University   Graduate School of Science Department of Physics

    2025.04 - Now

  • Niigata University

    2011.02 - 2025.03

  • - Niigata University, Research assistant

    2000

Education

  • Osaka University   The second semester of doctoral program   Graduated/Completed

    1996.04 - 1999.03

Papers

  • Tensor Renormalization Group Study of the 3D SU(2) and SU(3) Gauge Theories with the Reduced Tensor Network Formulation

    Atis Yosprakob, Kouichi Okunishi

    Progress of Theoretical and Experimental Physics   2025.03

    　More details

    Publishing type：Research paper (scientific journal)  

    DOI： 10.1093/ptep/ptaf028

  • Holographic Analysis of Boundary Correlation Functions for the Hyperbolic-Lattice Ising Model Reviewed

    Kouichi Okunishi, Tomotoshi Nishino

    Progress of Theoretical and Experimental Physics   2024.09

    　More details

    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1093/ptep/ptae137

  • Visualization of Entanglement Geometry by Structural Optimization of Tree Tensor Network

    Toshiya Hikihara, Hiroshi Ueda, Kouichi Okunishi, Kenji Harada, Tomotoshi Nishino

    arXiv:2401.16000   2024.01

    　More details

    Publishing type：Research paper (international conference proceedings)  

    DOI： 10.48550/arXiv.2401.16000

  • Statistical mechanics approach to the holographic renormalization group: Bethe lattice Ising model and p-adic AdS/CFT Reviewed

    Kouichi Okunishi, Tadashi Takayanagi

    Progress of Theoretical and Experimental Physics   2024.01

    　More details

    Authorship：Lead author,　Corresponding author   Publishing type：Research paper (scientific journal)  

    DOI： 10.1093/ptep/ptad156

Grant-in-Aid for Scientific Research

  • The Natural Laws of Extreme Universe--A New Paradigm for Spacetime and Matter from Q uantum Information

    Grant-in-Aid for Transformative Research Areas (A)  2025

  • Quantum many-body systems and tensor networks from quantum information perspectives

    Grant-in-Aid for Transformative Research Areas (A)  2025

Contract research

  • Quantum-classical fusion mediated by tensor network

    JST  JST CREST  2024.10

Charge of on-campus class subject

  • 物理学卒業研究A

    2025   Intensive lecture   Undergraduate

  • 物理学卒業演習A

    2025   Weekly class   Undergraduate

  • 量子統計力学A

    2025   Weekly class   Graduate school

  • 物理学特別研究2A

    2025   Intensive lecture   Graduate school

  • 物理学特別研究1A

    2025   Intensive lecture   Graduate school

  • 物理学特別演習2A

    2025   Intensive lecture   Graduate school

  • 物理学特別演習1A

    2025   Intensive lecture   Graduate school

  • 物理学特別研究5A

    2025   Intensive lecture   Graduate school

  • 物理学特別研究4A

    2025   Intensive lecture   Graduate school

  • 物理学特別研究3A

    2025   Intensive lecture   Graduate school

  • 物理学特別演習5A

    2025   Intensive lecture   Graduate school

  • 物理学特別演習4A

    2025   Intensive lecture   Graduate school

  • 物理学特別演習3A

    2025   Intensive lecture   Graduate school

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Charge of off-campus class subject

  • 課題探索特講

    Institution：Niigata University

  • 統計力学演習I

    Institution：Niigata University

  • 統計力学III

    Institution：Niigata University

  • 統計力学II

    Institution：Niigata University

  • 統計力学I

    Institution：Niigata University

  • 理学・スタディースキルズ

    Institution：Niigata University

  • 現代物理学

    Institution：Niigata University

  • 物理数学演習I

    Institution：Niigata University

  • 物理学演習III

    Institution：Niigata University

  • 物理学演習II

    Institution：Niigata University

  • 物理学基礎ゼミ

    Institution：Niigata University

  • 物理学基礎AII

    Institution：Niigata University

  • 物性物理学II

    Institution：Niigata University

  • 物性物理学I

    Institution：Niigata University

  • 専門力アクティブラーニング

    Institution：Niigata University

  • 多体系物理学

    Institution：Niigata University

  • 多体問題

    Institution：Niigata University

  • 基礎物理学演習II

    Institution：Niigata University

  • 基礎物理学演習I

    Institution：Niigata University

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Social Activities　⇒ Link to the list of Social Activities

  • Associate Editors

    Role(s)： Edit

    Type： Promotional material

    Physical Society of Japan  J Phys Soc Jpn.  2022.04 - Now

  • 日本物理学会領域１１世話人

    Role(s)： Logistic support

  • 日本物理学会・領域３運営委員

    Role(s)： Logistic support