Effective degrees of freedom in QCD thermodynamics

Abstract

An effective model reproducing the equation of state of hadronic matter as obtained in recent lattice QCD simulations and from hadron resonance gas data is presented. The hadronic phase is described by means of an extended Mott-Hagedorn resonance gas while the QGP phase is described by the extended PNJL model. The dissociation of hadrons is obtained by including the state dependent hadron resonance width. The model gives a quantitative estimate for partial fractions of hadronic and partonic degrees of freedom above $T_c$.

8 pages, 3 figures, International Conference on New Frontiers in Physics 2013

References in corpus (5)

• The QCD equation of state with dynamical quarks
• Equation of state and QCD transition at finite temperature
• Influence of hadronic bound states above $T_c$ on heavy-quark observables in Pb+Pb collisions at at the CERN Large Hadron Collider
• An effective model of QCD thermodynamics
• Pion and sigma meson dissociation in a modified NJL model at finite temperature

Cited by in corpus (7)

• Future Physics Perspectives on the Equation of State from Heavy Ion Collisions to Neutron Stars
• Polyakov-loop suppression of colored states in a quark-meson-diquark plasma
• Modelling Hybrid Stars in Quark-Hadron Approaches
• Mott-hadron resonance gas and lattice QCD thermodynamics
• Light meson gas in the QCD vacuum and oscillating Universe
• Quark cluster expansion model for interpreting finite-T lattice QCD thermodynamics
• Scaled variables and the quark-hadron duality