Chiral Phase Transition within Effective Models with Constituent Quarks

Details Chiral Phase Transition within Effective Models with Constituent Quarks Chiral Phase Transition within Effective Models with Constituent Quarks

2000-07-13

arxiv.org/abs/nucl-th/0007030v1

Phys.Rev.C64:045202,2001

Physics

Nuclear Physics

Nuclear Theory

22 pages, 18 figures

Scientific paper

10.1103/PhysRevC.64.045202

We investigate the chiral phase transition at nonzero temperature $T$ and baryon-chemical potential $\mu_B$ within the framework of the linear sigma model and the Nambu-Jona-Lasinio model. For small bare quark masses we find in both models a smooth crossover transition for nonzero $T$ and $\mu_B=0$ and a first order transition for T=0 and nonzero $\mu_B$. We calculate explicitly the first order phase transition line and spinodal lines in the $(T,\mu_B)$ plane. As expected they all end in a critical point. We find that, in the linear sigma model, the sigma mass goes to zero at the critical point. This is in contrast to the NJL model, where the sigma mass, as defined in the random phase approximation, does not vanish. We also compute the adiabatic lines in the $(T,\mu_B)$ plane. Within the models studied here, the critical point does not serve as a ``focusing'' point in the adiabatic expansion.

Affiliated with

Also associated with

No associations

Rating

Chiral Phase Transition within Effective Models with Constituent Quarks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Chiral Phase Transition within Effective Models with Constituent Quarks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chiral Phase Transition within Effective Models with Constituent Quarks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-15537