21 citations · 109 across the 13 of their papers we have counts for
7 papers · 1 filter
Absence of coexisting phase of quark-antiquark and diquark condensed phases in the extended Gross-Neveu model in dimensions
Akira Niégawa
We show that the coexisting phase of quark-antiquark and diquark condensed phases is absent in the cold quark matter in the dimensional extended Gross-Neveu model, which is…
Improvement of the hot QCD pressure by the minimal sensitivity criterion
M. Inui, A. Niegawa, H. Ozaki
The principles of minimal sensitivity (PMS) criterion is applied to the perturbative free energy density, or pressure, of hot QCD, which include the and part o…
Ferromagnetism in quark matter
A. Niegawa
We investigate the magnetic property of the cold quark matter employing the magnetic moment as the order parameter. Through analysis of the effective potential $V (\vecμ^{…
Fermion propagator in out of equilibrium quantum-field system and the Boltzmann equation
A. Niégawa
We aim to construct from first principles a perturbative framework for studying nonequilibrium quantum-field systems that include massless Dirac fermions. The system of our concern…
Comment on " Infrared and pinching singularities in out of equilibrium QCD plasmas''
A. Niégawa
Analyzing the dilepton production from out of equilibrium quark-gluon plasma, Le Bellac and Mabilat have recently pointed out that, in the reaction rate, the cancellation of mass (…
Finite-temperature reaction-rate formula: Finite volume system, detailed balance, limit, and cutting rules
A. Niégawa
A complete derivation, from first principles, of the reaction-rate formula for a generic process taking place in a heat bath of finite volume is given. It is shown that the formula…
Perturbative QCD at finite temperature and density
A. Niégawa
This is a comprehensive review on the perturbative hot QCD including the recent developments. The main body of the review is concentrated upon dealing with physical quantities like…