Phase diagram of neutral quark matter: The effect of neutrino trapping

Journal Article · Wed Feb 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.034025· OSTI ID:20776667

Ruester, Stefan B; Rischke, Dirk H ^[1]; Werth, Verena; Buballa, Michael ^[2]; Shovkovy, Igor A ^[3]

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1. Institut fuer Theoretische Physik, J. W. Goethe-Universitaet, D-60438 Frankfurt (Germany)
2. Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)
3. Frankfurt Institute for Advanced Studies, J. W. Goethe-Universitaet, D-60438 Frankfurt (Germany)

We study the effect of neutrino trapping on the phase diagram of dense, locally neutral three-flavor quark matter within the framework of a Nambu-Jona-Lasinio model. In the analysis, dynamically generated quark masses are taken into account self-consistently. The phase diagrams in the plane of temperature and quark chemical potential, as well as in the plane of temperature and lepton-number chemical potential are presented. We show that neutrino trapping favors two-flavor color superconductivity and disfavors the color-flavor-locked phase at intermediate densities of matter. At the same time, the location of the critical line separating the two-flavor color-superconducting phase and the normal phase of quark matter is little affected by the presence of neutrinos. The implications of these results for the evolution of protoneutron stars are briefly discussed.

• OSTI ID: 20776667
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COLOR MODEL
FLAVOR MODEL
LEPTON NUMBER
NEUTRINOS
PHASE DIAGRAMS
POTENTIALS
QUARK MATTER
QUARKS
REST MASS
SUPERCONDUCTIVITY
TRAPPING