Kouichi Okunishi

Associate Professor

Niigata University

Japan

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Dr. Kouichi Okunishi is an Associate Professor at Niigata University, Japan. His research encompasses areas such as tensor network formulations, statistical mechanics, and quantum entanglement, as evidenced by his recent publications on the analysis of gauge theories and magnetization phenomena. He is also involved in the development of techniques for entanglement bipartitioning and advancements in tree tensor networks.

Articles (13)

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2025

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2024

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2023

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2023

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2023

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2023

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2023

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2022

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2022

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2022

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2022

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2020

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2020

Collaborators (4)

Kenji Harada

Assistant professor

Kyoto University

JAPAN

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Toru Sakai

Professor

University of Hyogo

JAPAN

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Hiroshi Ueda

Associate Professor

Osaka University

JAPAN

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Hosho Katsura

University of Tokyo

JAPAN

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Kouichi Okunishi

Research Interests

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Articles (13)

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

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

Duality, criticality, anomaly, and topology in quantum spin-1 chains

Automatic structural optimization of tree tensor networks

Translational symmetry broken magnetization plateau of the S=1 antiferromagnetic Heisenberg chain with competing anisotropies

Entanglement bipartitioning and tree tensor networks

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

Angular-time evolution for the Affleck-Kennedy-Lieb-Tasaki chain and its edge-state dynamics

Developments in the Tensor Network — from Statistical Mechanics to Quantum Entanglement

Developments in the Tensor Network — from Statistical Mechanics to Quantum Entanglement

Optical selection rules of the magnetic excitation in the S=12 one-dimensional Ising-like antiferromagnet BaCo2V2O8

Tensor-network strong-disorder renormalization groups for random quantum spin systems in two dimensions

Finite- m scaling analysis of Berezinskii-Kosterlitz-Thouless phase transitions and entanglement spectrum for the six-state clock model

Collaborators (4)

Kenji Harada

Toru Sakai

Hiroshi Ueda

Hosho Katsura

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