The phase structure of the Polyakov–quark–meson model beyond mean field

Tina Katharina Herbst,Jan M Pawlowski,Bernd-Jochen Schaefer

doi:10.1016/j.physletb.2010.12.003

Tina Katharina Herbst, Jan M Pawlowski + Show 1 more

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https://doi.org/10.1016/j.physletb.2010.12.003

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Abstract

The Polyakov-extended quark–meson model (PQM) is investigated beyond mean-field. This represents an important step towards a fully dynamical QCD computation. Both the quantum fluctuations to the matter sector and the back-reaction of the matter fluctuations to the QCD Yang–Mills sector are included. Results on the chiral and confinement–deconfinement crossover/phase transition lines and the location of a possible critical endpoint are presented. Moreover, thermodynamic quantities such as the pressure and the quark density are discussed.

Highlights

Effective Description Flow Equation Phase Structure ThermodynamicsThe Phase Structure of the Polyakov–Quark-Meson Model beyond Mean Field
PQM model beyond Mean Field quark-meson fluctuations included within Functional Renormalization Group (FRG) approach Important feature: back-reaction to gluonic sector
Modifications of the Phase Structure fluctuations push CEP downwards T0(μ): chiral and deconfinement transitions coincide no quarkyonic phase

Summary

Tina Katharina Herbst

Schaefer and J.M. Pawlowski arXiv: 1008.0081 [hep-ph]. 5th International Conference on the Exact Renormalization Group September 12 - 19, 2010 Corfu, Greece. Recipient of a DOC-fFORTE-fellowship of the Austrian Academy of Sciences at the Institute of Physics

Polynomial Ansatz

Summary