Polyakov loop fluctuations and deconfinement in the limit of heavy quarks

Abstract

We explore the influence of heavy quarks on the deconfinement phase transition in an effective model for gluons interacting with dynamical quarks in color SU(3). With decreasing quark mass, the strength of the explicit breaking of the Z(3) symmetry grows and the first-order transition ends in a critical endpoint. The nature of the critical endpoint is examined by studying the longitudinal and transverse fluctuations of the Polyakov loop, quantified by the corresponding susceptibilities. The longitudinal susceptibility is enhanced in the critical region, while the transverse susceptibility shows a monotonic behavior across the transition point. We investigate the dependence of the critical endpoint on the number of quark flavors at vanishing and finite quark density. Finally we confront the model results with lattice calculations and discuss a possible link between the hopping parameter and the quark mass.

arXiv comment8 pages, 9 figures

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Cited by in corpus (16)

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• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• Polyakov loop modeling for hot QCD
• The phase structure of QCD for heavy quarks
• A perturbative study of the QCD phase diagram for heavy quarks at nonzero chemical potential: two-loop corrections
• Universal aspects of the phase diagram of QCD with heavy quarks
• Deconfinement critical point of lattice QCD with $N_{\mathrm{f}}=2$ Wilson fermions
• QCD phase transitions in the light quark chiral limit
• QCD in the heavy dense regime for general $N_c$: On the existence of quarkyonic matter
• Fluctuations of order parameter in an $SU(N_c)$ effective model
• Towards a theoretical description of dense QCD
• Polyakov loop fluctuations in the presence of external fields
• Deconfinement in the presence of a strong magnetic field
• Strong coupling methods in QCD thermodynamics
• Building models of quarks and gluons with an arbitrary number of colors using Cartan-Polyakov loops
• Approaching the Continuum Limit of the Deconfinement Critical Point for $N_{\text{f}}=2$ Staggered Fermions