The equation of state of quark-gluon matter from lattice QCD with two flavors of twisted-mass Wilson fermions

Abstract

We report on lattice QCD results for the thermodynamic equation of state of quark-gluon matter obtained with Nf=2 degenerate quark flavors. For the fermion field discretization we are using the Wilson-twisted mass prescription. Simulations have been carried out at three values of the bare quark masses corresponding to pion masses of 360, 430 and 640 MeV. We highlight the importance of a good control of the lattice cutoff dependence of the trace anomaly which we have studied at several values of the inverse temperature 1/T = a Nt with a time-like lattice extent up to Nt=12. We contrast our results with those of other groups obtained for Nf=0 and Nf=2+1. At low temperature we also confront them with hadron resonance gas model predictions for the trace anomaly.

26 pages, 16 figures

References in corpus (7)

• The equation of state in (2+1)-flavor QCD
• The QCD equation of state with dynamical quarks
• The QCD Equation of State with almost Physical Quark Masses
• QCD Thermodynamics from the Lattice
• The chiral phase transition in two-flavor QCD from imaginary chemical potential
• QCD thermodynamics with dynamical overlap fermions
• Lattice Monte-Carlo study of pre-conformal dynamics in strongly flavoured QCD in the light of the chiral phase transition at finite temperature

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• Phase structure and critical phenomena in 2-flavor QCD by holography
• Bayesian inference of real-time dynamics from lattice QCD
• Correlations between the deconfining and chiral transitions in holographic QCD
• Lattice QCD at Non-Zero Temperature
• Quark flavors in hot and dense holographic QCD: setup and comparison to data
• Hot Holographic 2-flavor Quark Star