Critical Behavior in Nt = 4 Staggered Fermion Thermodynamics

Details Critical Behavior in Nt = 4 Staggered Fermion Thermodynamics Critical Behavior in Nt = 4 Staggered Fermion Thermodynamics

1999-08-06

arxiv.org/abs/hep-lat/9908008v2

Phys.Rev.D61:054503,2000

Physics

High Energy Physics

High Energy Physics - Lattice

23 pp RevTeX, 10 Postscript figures, submitted to Phys. Rev

Scientific paper

10.1103/PhysRevD.61.054503

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.

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