Critical Behavior in Nt = 4 Staggered Fermion Thermodynamics

Abstract

Quantum chromodynamics with two zero-mass flavors is expected to exhibit a phase transition with O(4) critical behavior. Fixing the universality class is important for phenomenology and for facilitating the extrapolation of simulation data to physical quark mass values. Other groups have reported results from lattice QCD simulations with dynamical staggered quarks at Nt = 4, which suggest a departure from the expected critical behavior. We have pushed simulations to the largest volumes and smallest quark mass to date. Strong discrepancies in critical exponents and the scaling equation of state persist.

arXiv comment23 pp RevTeX, 10 Postscript figures, submitted to Phys. Rev

References in corpus (11)

• Susceptibilities, the Specific Heat and a Cumulant in Two-Flavour QCD
• Critical exponents of a three dimensional O(4) spin model
• Scaling of Chiral Order Parameter in Two-Flavor QCD
• Scaling Study of the Two-Flavor Chiral Phase Transition with the Kogut-Susskind Quark Action in Lattice QCD
• Two-Flavor Staggered Fermion Thermodynamics at N_t = 12
• Scaling functions for O(4) in three dimensions
• Finite-Temperature QCD on the Lattice
• Thermodynamics of Lattice QCD with Chiral 4-Fermion Interactions
• Finite-temperature chiral transitions in QCD with the Wilson quark action
• Critical Behavior at the Chiral Phase Transition
• Thermodynamics of Lattice QCD with massless quarks and chiral 4-fermion interactions

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