Two-flavor staggered fermion thermodynamics at Nt = 12

Claude Bernard, Tom Blum, Carleton DeTar, Steven Gottlieb, Kari Rummukainen, Urs M. Heller, James Hetrick, William D Toussaint, Robert L. Sugar

Research output: Contribution to journalArticle

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Abstract

We present results of an ongoing study of the nature of the high temperature crossover in QCD with two light fermion flavors. These results are obtained with the conventional staggered fermion action at the smallest lattice spacing to date, approximately 0.1 fm. Of particular interest are (1) a study of the temperature of the crossover, an important indicator of continuum scaling, (2) a determination of the induced baryon charge and baryon susceptibility, used to study the dissolution of hadrons at the crossover, (3) the scalar susceptibility, a signal for the appearance of soft modes, and (4) the chiral order parameter, used to test models of critical behavior associated with chiral symmetry restoration. From our new data and published results for Nt=4, 6, and 8, we determine the QCD magnetic equation of state from the chiral order parameter using O(4) and mean field critical exponents and compare it with the corresponding equation of state obtained from an O(4) spin model and mean field theory. We also present a scaling analysis of the Polyakov loop, suggesting a temperature-dependent "constituent quark free energy".

Original languageEnglish (US)
Pages (from-to)4585-4594
Number of pages10
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume54
Issue number7
StatePublished - Oct 1 1996

Fingerprint

Fermions
Crossover
crossovers
Thermodynamics
fermions
Baryon
Equation of State
Order Parameter
Susceptibility
thermodynamics
baryons
equations of state
quantum chromodynamics
Scaling
magnetic permeability
scaling
Chiral Symmetry
Dissolution
Spin Models
Mean-field Theory

ASJC Scopus subject areas

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

Cite this

Bernard, C., Blum, T., DeTar, C., Gottlieb, S., Rummukainen, K., Heller, U. M., ... Sugar, R. L. (1996). Two-flavor staggered fermion thermodynamics at Nt = 12. Physical Review D - Particles, Fields, Gravitation and Cosmology, 54(7), 4585-4594.

Two-flavor staggered fermion thermodynamics at Nt = 12. / Bernard, Claude; Blum, Tom; DeTar, Carleton; Gottlieb, Steven; Rummukainen, Kari; Heller, Urs M.; Hetrick, James; Toussaint, William D; Sugar, Robert L.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 54, No. 7, 01.10.1996, p. 4585-4594.

Research output: Contribution to journalArticle

Bernard, C, Blum, T, DeTar, C, Gottlieb, S, Rummukainen, K, Heller, UM, Hetrick, J, Toussaint, WD & Sugar, RL 1996, 'Two-flavor staggered fermion thermodynamics at Nt = 12', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 54, no. 7, pp. 4585-4594.
Bernard C, Blum T, DeTar C, Gottlieb S, Rummukainen K, Heller UM et al. Two-flavor staggered fermion thermodynamics at Nt = 12. Physical Review D - Particles, Fields, Gravitation and Cosmology. 1996 Oct 1;54(7):4585-4594.
Bernard, Claude ; Blum, Tom ; DeTar, Carleton ; Gottlieb, Steven ; Rummukainen, Kari ; Heller, Urs M. ; Hetrick, James ; Toussaint, William D ; Sugar, Robert L. / Two-flavor staggered fermion thermodynamics at Nt = 12. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1996 ; Vol. 54, No. 7. pp. 4585-4594.
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