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

Details The phase diagram of neutral quark matter: The effect of neutrino trapping The phase diagram of neutral quark matter: The effect of neutrino trapping

2005-09-08

arxiv.org/abs/hep-ph/0509073v2

Phys.Rev.D73:034025,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 9 figures, references added; version accepted for publication in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.73.034025

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.

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