Quasiparticle description of lattice QCD thermodynamics

2001/05/23 by Roland Schneider, R. A. Schneider, W. Weise · 5 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevc.64.055201

published as Phys.Rev. C64 (2001) 055201 · 20 pages, 10 eps figures

arxiv created 2001/05/23 · openalex publication_date 2001/10/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We propose a novel quasiparticle interpretation of the equation of state of deconfined QCD at finite temperature. Using appropriate thermal masses, we introduce a phenomenological parametrization of the onset of confinement in the vicinity of the predicted phase transition. Lattice results of the energy density, the pressure, and the interaction measure of pure SU(3) gauge theory are excellently reproduced. We find a relationship between the thermal energy density of the Yang-Mills vacuum and the chromomagnetic condensate 〈B²〉_T. Finally, an extension to QCD with dynamical quarks is discussed. Good agreement with lattice data for 2, 2+1, and 3 flavor QCD is obtained. We also present the QCD equation of state for realistic quark masses.

Citations

• Critical behavior inNt=4staggered fermion thermodynamics

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