Chiral condensate in hadronic matter

Abstract

The finite temperature chiral condensate for 2+1 quark flavors is considered in the framework of the hadron resonance gas model. This requires some dynamical information, for which two models are employed: one based on the quark structure of hadrons combined with the Nambu-Jona-Lasinio approach to chiral symmetry breaking, and one originating from gauge/gravity duality. Using these insights, hadronic sigma terms are discussed in the context of recent first principles results following from lattice QCD and chiral perturbation theory. For the condensate, in generic agreement with lattice data it is found that chiral symmetry restoration in the strange quark sector takes place at higher temperatures than in the light quark sector. The importance of this result for a recently proposed dynamical model of hadronic freeze-out in heavy-ion collisions is outlined.

13 pages, 11 figures, revised version with added text, figure and references

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Cited by in corpus (24)

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• In medium properties of axion within a Polyakov loop enhanced Nambu-Jona-Lasinio model
• Effect of mesonic off-shell correlations in the PNJL equation of state
• Chiral condensate from a hadron resonance gas model
• Mott-Anderson freeze-out and the strange matter "horn"
• Chiral condensate and the equation of state at nonzero baryon density from the hadron resonance gas model with a repulsive mean field
• Thermodynamics of quark matter with multiquark clusters in an effective Beth-Uhlenbeck type approach
• Effects of composite pions on the chiral condensate within the PNJL model at finite temperature
• Chiral phase transition and kaon-to-pion ratios in the entanglement SU(3) PNJL model
• Towards a unified hadron-quark equation of state for neutron stars within the relativistic mean-field model
• Light quarks at finite temperature: chiral restoration and the fate of the $U(1{)}_A$ symmetry
• The pion-kaon scattering amplitude and the $K^0(700)$ and $K^{\ast }(892)$ resonances at finite temperature
• In-medium effect on the thermodynamics and transport coefficients in van der Waals hadron resonance gas
• Nonlinear Klein-Gordon equation and the Bose-Einstein condensation
• The role of strangeness in chiral and $U(1{)}_A$ restoration
• Formation of hadrons at chemical freeze-out
• Thermodynamics and quark condensates of three-flavor QCD at low temperature
• The QCD scalar susceptibility and thermal scalar resonances in chiral symmetry restoration
• Confinement of Fermions in Tachyon Matter at Finite Temperature
• Mott dissociation and kaon to pion ratio in the EPNJL model
• Speed of sound of QCD matter at chiral crossover