The equation of state in lattice QCD: with physical quark masses towards the continuum limit

2005/10/31 by Yasumichi Aoki, Y. Aoki, Z. Fodor +4 · 15 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quark #Strange quark #hep-lat #hep-ph

paper · pdf · doi:10.1088/1126-6708/2006/01/089

published as JHEP 0601:089,2006 · 14 pages, 9 figures. Version published in JHEP: discussions added in Sects. 1, 2. Fig. 1 changed and a new figure for the interaction measure added. Information on statistics added in Table 1. Raw values of the pressure added in Table 3. A few references added

openalex publication_date 2006/01/17 · arxiv created 2006/03/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The equation of state of QCD at vanishing chemical potential as a function of temperature is determined for two sets of lattice spacings. Coarser lattices with temporal extension of N_t=4 and finer lattices of N_t=6 are used. Symanzik improved gauge and stout-link improved staggered fermionic actions are applied. The results are given for physical quark masses both for the light quarks and for the strange quark. Pressure, energy density, entropy density, quark number susceptibilities and the speed of sound are presented.

Citations

• Equation of state at finite temperature and chemical potential, lattice QCD results
• Chiral perturbation theory: Expansions in the mass of the strange quark
• Flavor-symmetry restoration and Symanzik improvement for staggered quarks

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