The effect of the Polyakov loop on the chiral phase transition

G. Marko, Zs Szép

Research output: Contribution to journalConference article


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.

Original languageEnglish
Article number02003
JournalEPJ Web of Conferences
Publication statusPublished - Dec 1 2012
EventInternational Workshop on Hot and Cold Baryonic Matter, HCBM 2010 - Budapest, Hungary
Duration: Aug 15 2010Aug 20 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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