Breached pairing superfluidity: Possible realization in QCD

Details Breached pairing superfluidity: Possible realization in QCD Breached pairing superfluidity: Possible realization in QCD

2003-04-01

arxiv.org/abs/hep-ph/0304016v2

Phys.Rev.Lett. 91 (2003) 032001

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, latex, 1 figure; added references; Comment on Ref. [10] changed

Scientific paper

10.1103/PhysRevLett.91.032001

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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