Color neutrality effects in the phase diagram of the PNJL model
High Energy Physics - Phenomenology
2008-12-20 v2 Nuclear Theory
Abstract
The phase diagram of a two-flavor Polyakov loop Nambu-Jona-Lasinio model is analyzed imposing the constraint of color charge neutrality. Main effects of this constraint are a shrinking of the chiral symmetry breaking (chiSB) domain in the T-mu plane, a shift of the critical point to lower temperatures and a coexistence of chiSB and two-flavor superconducting phases. The effects can be understood in view of the presence of a nonvanishing color chemical potential mu_8, which is necessary to compensate the color charge density rho_8 induced by the nonvanishing Polyakov-loop mean field phi_3.
Keywords
Cite
@article{arxiv.0807.1660,
title = {Color neutrality effects in the phase diagram of the PNJL model},
author = {D. Gomez Dumm and D. B. Blaschke and A. G. Grunfeld and N. N. Scoccola},
journal= {arXiv preprint arXiv:0807.1660},
year = {2008}
}
Comments
8 pages, 4 figures, figures added, minor text modifications