Neutrality of the color-flavor-locked phase in a Dyson-Schwinger approach

Journal Article · Sun Jun 01 04:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.114010· OSTI ID:21205073

Nickel, D ^[1]; Alkofer, R ^[2]; Wambach, J ^[1]

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1. Institute for Nuclear Physics, Technical University Darmstadt, Schlossgartenstrasse 9, D-64289 Darmstadt (Germany)
2. Institute of Physics, University of Graz, Universitaetsplatz 5, A-8010 Graz (Austria)

The role of neutrality constraints for the phase structure of QCD at nonvanishing chemical potentials is studied within a self-consistent truncation scheme for the Dyson-Schwinger equation of the quark propagator in Landau gauge. We find the (approximate) color-flavor-locked phase to be energetically preferred at all potentially relevant densities and for physical values of the quark masses. We furthermore observe the impossibility to define this phase by residual global symmetries and discuss the role of chemical potentials.

• OSTI ID: 21205073
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 11 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COLOR MODEL
DENSITY
EQUATIONS
FLAVOR MODEL
MASS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SYMMETRY