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arXiv · hep-ph/0304016

Breached pairing superfluidity: Possible realization in QCD

Elena Gubankova·W. Vincent Liu·Frank Wilczek
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Abstract

We propose a wide universality class of gapless superfluids, and analyze a limit that might be realized in quark matter at intermediate densities. In the breached pairing color superconducting phase heavy $s$-quarks, with a small Fermi surface, pair with light $u$ or $d$ quarks. The groundstate has a superfluid and a normal Fermi component simultaneously. We expect a second order phase transition, as a function of increasing density, from the breached pairing phase to the conventional color-flavor locked (CFL) phase.

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Elena Gubankova, W. Vincent Liu, Frank Wilczek. 2003-04-15. Breached pairing superfluidity: Possible realization in QCD. https://doi.org/10.1103/physrevlett.91.032001

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