5 papers
Mixed-state quantum geometry of dense two-color QCD matter
Kouji Kashiwa, Riki Oshima, Hiroaki Kouno
We investigate an information-geometric approach to dense two-color QCD using thermal states defined as normalized Gibbs states in the two-flavor Nambu--Jona-Lasinio model at the m…
Effective degrees of freedom, trace anomaly and c-theorem like condition in the hadron resonance gas model
Hiroaki Kouno, Riki Oshima, Kouji Kashiwa
The relation between the effective degrees of freedom (EDOF) and the trace anomaly is studied in the hadron resonance gas (HRG) model. If we regard the thermodynamical relation as…
Thermodynamic geometry in hadron resonance gas model at real and imaginary baryon chemical potential and a simple sufficient condition for quark deconfinement
Riki Oshima, Hiroaki Kouno, Motoi Tachibana +1
The thermodynamic geometry of the hadron resonance gas model with (without) excluded volume effects (EVE) of baryons is investigated. The case with imaginary mu, where mu is the ba…
Hadron-quark hybrid model, modular transformation and Roberge-Weiss transition
Hiroaki Kouno, Riki Oshima, Motoi Tachibana +1
In the framework of modular transformations, we reformulate the recently proposed hadron-quark hybrid model when the imaginary baryonic chemical potential is introduced. As a resul…
Roberge-Weiss periodicity and singularity in hadron resonance gas model with excluded volume effects
Riki Oshima, Hiroaki Kouno, Kouji Kashiwa
Quantum chromodynamics (QCD) with pure imaginary baryon number chemical potential mu =i theta T, where T is temperature and theta is a real number, has the Roberge-Weiss periodicit…