Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-05-18
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 5 figures
Scientific paper
We consider the thermodynamics of chiral models in the mean-field approximation and discuss the relevance of the (frequently omitted) fermion vacuum loop. Within the chiral quark-meson model and its Polyakov loop extended version, we show that the fermion vacuum fluctuations can change the order of the phase transition in the chiral limit and strongly influence physical observables. We compute the temperature-dependent effective potential and baryon number susceptibilities in these models, with and without the vacuum term, and explore the cutoff and the pion mass dependence of the susceptibilities. Finally, in the renormalized model the divergent vacuum contribution is removed using the dimensional regularization.
Friman Bengt
Nakano Eiichi
Redlich Krzysztof
Schaefer Bernd-Jochen
Skokov Vladimir
No associations
LandOfFree
Vacuum fluctuations and the thermodynamics of chiral models 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 Vacuum fluctuations and the thermodynamics of chiral models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum fluctuations and the thermodynamics of chiral models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-57983