Color neutrality effects in the phase diagram of the PNJL model
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
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.
8 pages, 4 figures, figures added, minor text modifications
8 pages, 4 figures, figures added, minor text modifications