Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-04-16
Nucl.Phys. A742 (2004) 95-129
Physics
High Energy Physics
High Energy Physics - Phenomenology
Style file is changed, references are added, 42 pages, 14 figures, Nucl. Phys. A in press
Scientific paper
10.1016/j.nuclphysa.2004.06.013
We derive the linear Langevin equation that describes the behavior of the fluctuations of the order parameter of the chiral phase transition above the critical temperature by applying the projection operator method to the Nambu-Jona-Lasinio model at finite temperature and density. The Langevin equation relaxes exhibiting oscillation, reveals thermalization and converges to the equilibrium state consistent with the mean-field approximation as time goes on. With the help of this Langevin equation, we further investigate the relaxation of the critical fluctuations. The relaxation time of the critical fluctuations increases at speed as the temperature approaches toward the critical temperature because of the critical slowing down. The critical slowing down is enhanced as the chemical potential increases because of the Pauli blocking. Furthermore, we find another enhancement of the critical slowing down around the tricritical point.
Koide Takashi
Maruyama Masako
No associations
LandOfFree
Enhancement of Critical Slowing Down in Chiral Phase Transition -- Langevin Dynamics Approach -- 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 Enhancement of Critical Slowing Down in Chiral Phase Transition -- Langevin Dynamics Approach --, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhancement of Critical Slowing Down in Chiral Phase Transition -- Langevin Dynamics Approach -- will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-400308