The Polyakov loop is included in the SU(2)L×SU(2) R chiral quark-meson model by considering the propagation of the constituent quarks, coupled to the (δ,φ) meson multiplet, on the homogeneous background of a temporal gauge field, diagonal in color space. The model is solved at finite temperature and quark baryon chemical potential both in the chiral limit and for the physical value of the pion mass by using an expansion in the number of flavors Nf . Keeping the fermion propagator at its tree-level, a resummation on the pion propagator is constructed which resums infinitely many orders in 1/Nf , where O(1/Nf ) represents the order at which the fermions start to contribute in the pion propagator. The influence of the Polyakov loop on the tricritical or the critical point in the μq - T phase diagram is studied for various forms of the Polyakov loop potential.
|Journal||EPJ Web of Conferences|
|Publication status||Published - Dec 1 2012|
|Event||International Workshop on Hot and Cold Baryonic Matter, HCBM 2010 - Budapest, Hungary|
Duration: Aug 15 2010 → Aug 20 2010
ASJC Scopus subject areas
- Physics and Astronomy(all)