Spontaneous parity and charge-conjugation violations at real isospin and imaginary baryon chemical potentials

Hiroaki Kouno, Mizuho Kishikawa, Takahiro Sasaki, Yuji Sakai, Masanobu Yahiro

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13 Citations (Scopus)

Abstract

The phase structure of two-flavor QCD is investigated at real isospin and imaginary quark chemical potentials by using the Polyakov-loop extended Nambu-Jona-Lasinio model. In the region, parity symmetry is spontaneously broken by the pion-superfluidity phase transition, whereas charge-conjugation symmetry is spontaneously violated by the Roberge-Weiss transition. The chiral (deconfinement) crossover at zero isospin and quark chemical potentials is a remnant of the parity (charge-conjugation) violation. The interplay between the parity and charge-conjugation violations are analyzed, and it is investigated how the interplay is related to the correlation between the chiral and deconfinement crossovers at zero isospin and quark chemical potentials.

Original languageEnglish
Article number016001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume85
Issue number1
DOIs
Publication statusPublished - Jan 3 2012

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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