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

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 a
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. PACS numbers: 12.39.-x 12.38.Aw 26.60.+c
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Metadaten
Author:Stefan Bernhard Rüster, Verena Werth, Michael Buballa, Igor A. Shovkovy, Dirk-Hermann Rischke
URN:urn:nbn:de:hebis:30-38294
Document Type:Preprint
Language:English
Date of Publication (online):2007/02/26
Year of first Publication:2006
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2007/02/26
Source:http://www.arxiv.org/abs/hep-ph/0509073 ; Journal-ref: Phys.Rev. D73 (2006) 034025 http://link.aps.org/abstract/PRD/v73/p034025
HeBIS PPN:190443502
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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