10 citations · 17 across the 10 of their papers we have counts for
10 papers
Information geometry of non-equilibrium quantum states: Mixed metric structures on an extended information manifold
Kouji Kashiwa, Hidefumi Matsuda
We discuss an information-geometric framework for characterizing quantum states in non-equilibrium dynamics. Using the transverse-field Ising chain model as a laboratory, we invest…
Quantum simulation of QC2D on a 2-dimensional small lattice
Zhen-Xuan Yang, Hidefumi Matsuda, Xu-Guang Huang +1
We study the Hamiltonian formulation of SU(2) Yang-Mills theory with staggered fermions in a (2+1)-dimensional small lattice system. We construct a gauge-invariant and finite-dimen…
Simulation of a (3+1)D glasma in Milne coordinates: Topological charge, eccentricity, and angular momentum
Hidefumi Matsuda, Xu-Guang Huang
We apply the 3D glasma simulation method using Milne coordinates, proposed in our previous work [1], to the early stage of the Au-Au collisions at GeV. The…
Effect of Longitudinal Fluctuations of D Weizsäcker-Williams Field on Pressure Isotropization of Glasma
Hidefumi Matsuda, Xu-Guang Huang
We investigate the effects of boost invariance breaking on the isotropization of pressure in the glasma, using the D glasma simulation. The breaking is attributed to spatial f…
Simulation of 3+1D glasma in Milne coordinates I: Development of the framework
Hidefumi Matsuda, Xu-Guang Huang
We propose a new numerical method for D glasma simulation using Milne coordinates. We formulate the classical Yang-Mills field and D classical color current on a lattice at…
Improving efficiency of the path optimization method for a gauge theory
Yusuke Namekawa, Kouji Kashiwa, Hidefumi Matsuda +2
We investigate efficiency of a gauge-covariant neural network and an approximation of the Jacobian in optimizing the complexified integration path toward evading the sign problem i…
Entropy production in longitudinally expanding Yang-Mills field with use of Husimi functionsemiclassical approximation
Hidefumi Matsuda, Teiji Kunihiro, Akira Ohnishi +1
We investigate the possible thermalization process of the highly occupied and weakly coupled Yang-Mills fields expanding along the beam axis through an evaluation of the entropy, p…
Replica evolution of classical field in 4+1 dimensional spacetime toward real time dynamics of quantum field
Akira Ohnishi, Hidefumi Matsuda, Teiji Kunihiro +1
Real-time evolution of replicas of classical field is proposed as an approximate simulator of real-time quantum field dynamics at finite temperatures. We consider classical fie…
Shear viscosity of classical Yang-Mills field
Hidefumi Matsuda, Teiji Kunihiro, Berndt Müller +2
We investigate the shear viscosity of the classical Yang-Mills (CYM) field on a lattice by using the Green-Kubo formula, where the shear viscosity is calculated from the time-c…
Shear viscosity of classical fields in scalar theory
Hidefumi Matsuda, Teiji Kunihiro, Akira Ohnishi +1
We investigate the shear viscosity of massless classical scalar fields in the theory on a lattice by using the Green-Kubo formula. Based on the scaling property of the classi…