Jun Nishimura

Professor

The Graduate University for Advanced Studies, SOKENDAI

Japan

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About

Jun Nishimura is a Professor at the Graduate University for Advanced Studies (SOKENDAI) in Japan. His research focuses on quantum decoherence, lattice gauge theory, and the dynamics of quantum systems, as evidenced by his recent articles exploring topics such as the Type IIB matrix model and quantum cosmology. He employs advanced computational techniques, including Lefschetz thimble calculations and Monte Carlo simulations, to investigate complex phenomena in theoretical physics.

Articles (16)

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2025

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2025

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2025

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2025

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2025

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2025

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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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2021

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2020

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2020

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2020

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2020

Collaborators (3)

Yuhma Asano

Assistant Professor

University of Tsukuba

JAPAN

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Kohta Hatakeyama

Kyoto University

JAPAN

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Takehiro Azuma

Associate Professor

Setsunan University

JAPAN

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Jun Nishimura

Research Interests

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About

Articles (16)

Quantum decoherence in the Caldeira-Leggett model by the real-time path integral on a computer

Inequivalence between the Euclidean and Lorentzian Versions of the Type IIB Matrix Model from Lefschetz Thimble Calculations

Quantum Decoherence from Complex Saddle Points

Monte Carlo studies of quantum cosmology by the generalized Lefschetz thimble method

Evidence of a CP broken deconfined phase in 4D SU(2) Yang-Mills theory at θ = π from imaginary θ simulations

Defining the Type IIB Matrix Model without Breaking Lorentz Symmetry

Progress in the numerical studies of the type IIB matrix model

Color superconductivity on the lattice — analytic predictions from QCD in a small box

The dynamics of zero modes in lattice gauge theory — difference between SU(2) and SU(3) in 4D

A new picture of quantum tunneling in the real-time path integral from Lefschetz thimble calculations

Backpropagating Hybrid Monte Carlo algorithm for fast Lefschetz thimble calculations

Tensor renormalization group and the volume independence in 2D U(N) and SU(N) gauge theories

Complex Langevin analysis of the spontaneous breaking of 10D rotational symmetry in the Euclidean IKKT matrix model

Complex Langevin calculations in QCD at finite density

Complex Langevin analysis of 2D U(1) gauge theory on a torus with a $\theta$ term

The emergence of expanding space–time and intersecting D-branes from classical solutions in the Lorentzian type IIB matrix model

Collaborators (3)

Yuhma Asano

Kohta Hatakeyama

Takehiro Azuma

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