Deconfinement at finite chemical potential.
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
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