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Absence of two-flavor color-superconductivity in compact stars | | Mark Alford
; Krishna Rajagopal
; | | Date: |
30 Mar 2002 | | Journal: | JHEP 0206 (2002) 031 | | Subject: | hep-ph nucl-th | | Affiliation: | Glasgow), Krishna Rajagopal (MIT | | Abstract: | The simplest pattern of color superconductivity involves BCS pairing between up and down quarks. We argue that this ``2SC’’ phase will not arise within a compact star. A macroscopic volume of quark matter must be electrically neutral and must be a color singlet. Satisfying these requirements imposes a significant free energy cost on the 2SC phase, but not on color-flavor locked (CFL) quark matter, in which up, down and strange quarks all pair. As a function of increasing density, therefore, one may see a single phase transition from hadronic matter directly to CFL quark matter. Alternatively, there may be an intervening phase in which the different flavors self-pair, or pair with each other in a non-BCS pattern, such as in a crystalline color superconductor. | | Source: | arXiv, hep-ph/0204001 | | Services: | Forum | Review | PDF | Favorites | |
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