Critical behavior in Nt=4 staggered fermion thermodynamics

Claude Bernard, Carleton DeTar, Steven Gottlieb, Urs M. Heller, James Hetrick, Kari Rummukainen, Robert L. Sugar, Doug Toussaint

Research output: Contribution to journalArticle

24 Scopus citations

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.

Original languageEnglish (US)
Article number054503
Pages (from-to)1-6
Number of pages6
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume61
Issue number5
StatePublished - Mar 1 2000

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Bernard, C., DeTar, C., Gottlieb, S., Heller, U. M., Hetrick, J., Rummukainen, K., Sugar, R. L., & Toussaint, D. (2000). Critical behavior in Nt=4 staggered fermion thermodynamics. Physical Review D - Particles, Fields, Gravitation and Cosmology, 61(5), 1-6. [054503].