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8 papers · 1 filter
Two-loop effective potential, thermal resummation and first-order phase transitions: Beyond the high-temperature expansion
Koichi Funakubo, Eibun Senaha
We study a finite temperature two-loop resummed effective potential in the Abelian gauge theory. A tractable calculation scheme without using a high-temperature expansion is devise…
Two-color QCD at imaginary chemical potential and its impact on real chemical potential
Kouji Kashiwa, Takahiro Sasaki, Hiroaki Kouno +1
We study properties of two-color QCD at imaginary chemical potential () from the viewpoint of the Roberge-Weiss (RW) periodicity, the charge conjugation and the pseudo-reality.…
Wilsonian renormalization group analysis of nonrelativistic three-body systems without introducing dimerons
Koji Harada, Hirofumi Kubo, Issei Yoshimoto
Low-energy effective field theory describing a nonrelativistic three-body system is analyzed in the Wilsonian renormalization group (RG) method. No effective auxiliary field (dimer…
A practical solution to the sign problem at finite theta-vacuum angle
Takahiro Sasaki, Hiroaki Kouno, Masanobu Yahiro
We propose a practical way of circumventing the sign problem in lattice QCD simulations with a theta-vacuum term. This method is the reweighting method for the QCD Lagrangian after…
Multidimensional Shintani zeta functions and zeta distributions on R^d
Takahiro Aoyama, Takashi Nakamura
The class of Riemann zeta distribution is one of the classical classes of probability distributions on R. Multidimensional Shintani zeta function is introduced and its definable pr…
The quarkynic phase and the Z_{Nc} symmetry
Yuji Sakai, Hiroaki Kouno, Takahiro Sasaki +1
We investigate the interplay between the Z_{Nc} symmetry and the emergence of the quarkyonic phase, adding the flavor-dependent complex chemical potentials μ_f=μ+iTθ_f with (θ_f)=(…