Deconfinement at finite chemical potential.

Journal Article · Thu Jul 16 04:00:00 EDT 1998 · Phys. Lett. B

DOI:https://doi.org/10.1016/S0370-2693(98)00546-2· OSTI ID:938178

Bender, A; Poulis, G I; Roberts, C D; Schmidt, S; Thomas, A W

In a confining, renormalizable, Dyson-Schwinger equation model of two-flavor QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a means of determining the behavior of the chiral and deconfinement order parameters, and low-energy pion observables. We find coincident, first order deconfinement and chiral symmetry restoration transitions at {micro}c=375 MeV. f{sub {pi}} is insensitive to {mu} until {mu}{approx}{mu}{sub 0}:=0.7 {mu}{sub c} when it begins to increase rapidly. m{sub {pi}} is weakly dependent on {mu}, decreasing slowly with {mu} and reaching a minimum 6% less than its {mu}=0 value at {mu}={mu}{sub 0}. In a two-flavor free-quark gas at {mu}={mu}{sub c} the baryon number density would be approximately 3 {rho}{sub 0}, where {rho}{sub 0}=0.16 fm-3; while in such a gas at {mu}{sub 0} the density is {rho}{sub 0}.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: ER
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 938178
• Report Number(s): ANL/PHY/JA-27918
• Journal Information: Phys. Lett. B, Journal Name: Phys. Lett. B Journal Issue: 3-4 ; Jul. 16, 1998 Vol. 431; ISSN PYLBAJ; ISSN 0370-2693
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON NUMBER
CHIRAL SYMMETRY
ORDER PARAMETERS
PIONS
PROPAGATOR
QUANTUM CHROMODYNAMICS