Breached Pairing Superfluidity: Possible Realization in QCD
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 2003
- DOI:
- 10.1103/PhysRevLett.91.032001
- arXiv:
- arXiv:hep-ph/0304016
- Bibcode:
- 2003PhRvL..91c2001G
- Keywords:
-
- 12.38.Aw;
- 26.60.+c;
- 97.60.Jd;
- General properties of QCD;
- Nuclear matter aspects of neutron stars;
- Neutron stars;
- High Energy Physics - Phenomenology;
- Condensed Matter
- E-Print:
- 5 pages, latex, 1 figure