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29 papers · 1 filter
Persistent homology analysis for dense QCD effective model with heavy quarks
Kouji Kashiwa, Takehiro Hirakida, Hiroaki Kouno
The isospin chemical potential region is known as the sign-problem free region of quantum chromodynamics (QCD). In this paper, we introduce the isospin chemical potential to the th…
Persistent homology analysis of deconfinement transition in effective Polyakov-line model
Takehiro Hirakida, Kouji Kashiwa, Junpei Sugano +3
The persistent homology analysis is applied to the effective Polyakov-line model on a rectangular lattice to investigate the confinement-deconfinement nature. The lattice data are…
Themodynamics for pure SU() gauge theory using gradient flow
Takehiro Hirakida, Etsuko Itou, Hiroaki Kouno
We study the equation of state of pure SU() gauge theory using Monte Carlo simulations. The scale-setting of lattice parameters has been carried by using the gradient flow. We p…
Sign problem in -symmetric effective Polyakov-line model
Takehiro Hirakida, Junpei Sugano, Hiroaki Kouno +2
As an effective model corresponding to -symmetric QCD (-QCD), we construct a -symmetric effective Polyakov-line model (-EPLM) by using the logarithmic fermion e…
Interplay between sign problem and Z_3 symmetry in three-dimensional Potts model
Takehiro Hirakida, Hiroaki Kouno, Junichi Takahashi +1
We construct four kinds of Z3-symmetric three-dimentional (3-d) Potts models, each with different number of states at each site on a 3-d lattice, by extending the 3-d three-state P…
Analytic continuation of finite density QCD with heavy quarks in the strong coupling region
Shinji Ejiri, Hiroshi Yoneyama
Complex nature of finite density QCD with heavy quarks in the strong coupling region is studied. For this purpose, we consider the effective potential as a function of Polyakov lin…