Single color and single flavor color superconductivity

Abstract

We survey the non-locked color-flavor-spin channels for quark-quark (color superconducting) condensates in QCD, using an NJL model. We also study isotropic quark-antiquark (mesonic) condensates. We make mean-field estimates of the strength and sign of the self-interaction of each condensate, using four-fermion interaction vertices based on known QCD interactions. For the attractive quark pairing channels, we solve the mean-field gap equations to obtain the size of the gap as a function of quark density. We also calculate the dispersion relations for the quasiquarks, in order to see how fully gapped the spectrum of fermionic excitations will be. We use our results to specify the likely pairing patterns in neutral quark matter, and comment on possible phenomenological consequences.

30 pages, LaTeX

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• Color superconductivity and the strange quark
• The Kohn-Luttinger Effect in Dense Matter and its Implications for Neutron Stars
• Chiral random matrix theory for colorful quark-antiquark condensates
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