Breached Pairing Superfluidity: Possible Realization in QCD

2003/04/15 by Elena Gubankova, W. Vincent Liu, Frank Wilczek · 10 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Color superconductivity #Condensed matter physics #Diquark #Fermi Gamma-ray Space Telescope #Fermion #Gapless playback #Pairing #Particle physics #Physics #Physics of Superconductivity and Magnetism #Pulsars and Gravitational Waves Research #Quantum chromodynamics #Quark #Strange matter #Superconductivity #Superfluidity #Universality (dynamical systems) #cond-mat #hep-ph

paper · pdf · doi:10.1103/physrevlett.91.032001

published as Phys.Rev.Lett. 91 (2003) 032001 · 5 pages, latex, 1 figure; added references; Comment on Ref. [10] changed

arxiv created 2003/04/15 · openalex publication_date 2003/07/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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 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.

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