Regularization issues for a cold and dense quark matter model in $\beta -$equilibrium

Abstract

A regularization scheme that explicitly separates vacuum contributions from medium effects is applied to a Nambu--Jona-Lasinio model with diquark interactions and in $\beta -$equilibrium. We perform a comparison of this proposed scheme with the more traditional one, where no separation of vacuum and medium effects is done. Our results point to both qualitative and quantitative important differences between these two methods, in special regarding the phase structure of the model in the cold and dense nuclear matter case.

14 pages, 6 figures, replaced with updated version matching the published one

References in corpus (3)

• Quark matter under strong magnetic fields in the Nambu--Jona-Lasinio Model
• Two lectures on color superconductivity
• Chromomagnetic instability in dense quark matter

Cited by in corpus (8)

• Cold QCD at finite isospin density: confronting effective models with recent lattice data
• Dynamics of QCD Matter -- current status
• Hot QCD at finite isospin density: confronting SU(3) Nambu-Jona-Lasinio model with recent lattice data
• Chiral susceptibility in Nambu Jona Lasinio model: a Wigner function approach
• Deconfinement and chiral phase transitions in quark matter with chiral imbalance
• Speed of sound peak in isospin QCD: a natural prediction of the Medium Separation Scheme
• Medium separation scheme effects on the magnetized and cold two-flavor superconducting quark matter
• Speed of sound peak in two-color dense QCD: confronting effective models with lattice data