2009/11/30 by M. Cheng, Shinji Ejiri, S. Ejiri +17 · 6 citations
Physics and Astronomy · #Degenerate energy levels #Fermion #Hadron #High-Energy Particle Collisions Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Strange quark #Strangeness #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.81.054504
published as Phys.Rev.D81:054504,2010 · 7 pages, LaTeX, 6 figures; minor corrections, typos corrected, references added
openalex publication_date 2010/03/15 · arxiv created 2010/03/16 · arxiv updated 2010/04/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We calculate the QCD equation of state for temperatures corresponding to the transition region with physical mass values for two degenerate light quark flavors and a strange quark using an improved staggered fermion action (p4-action) on lattices with temporal extent N_\ensuremathτ=8. We compare our results with previous calculations performed at twice larger values of the light quark masses as well as with results obtained from a resonance gas model calculation. We also discuss the deconfining and chiral aspects of the QCD transition in terms of renormalized Polyakov loop, strangeness fluctuations, and subtracted chiral condensate. We show that compared to the calculations performed at twice larger value of the light quark mass the transition region shifts by about 5 MeV toward smaller temperatures.