Phys. Rev. Lett. 91, 032001 (2003) [4 pages]Breached Pairing Superfluidity: Possible Realization in QCDReceived 1 April 2003; published 17 July 2003 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 ground state 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 phase. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.032001
DOI:
10.1103/PhysRevLett.91.032001
PACS:
12.38.Aw, 26.60.+c, 97.60.Jd
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