Gapless two-flavor color superconductor

A new, stable gapless two-flavor color superconducting phase that appears under conditions of local charge neutrality and β-equilibrium is revealed. In this phase, the symmetry of the ground state is the same as in the conventional two-flavor color superconductor. In the low-energy spectrum of this...

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Bibliographic Details
Published in:Physics letters. B 2003-07, Vol.564 (3-4), p.205-211
Main Authors: Shovkovy, Igor, Huang, Mei
Format: Article
Language:English
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Summary:A new, stable gapless two-flavor color superconducting phase that appears under conditions of local charge neutrality and β-equilibrium is revealed. In this phase, the symmetry of the ground state is the same as in the conventional two-flavor color superconductor. In the low-energy spectrum of this phase, however, there are only two gapped fermionic quasiparticles, and the other four quasiparticles are gapless. The origin and the basic properties of the gapless two-flavor color superconductor are discussed. This phase is a natural candidate for quark matter in cores of compact stars.
ISSN:0370-2693
1873-2445
DOI:10.1016/S0370-2693(03)00748-2