Stability Criteria for Breached-Pair Superfluidity

2004/05/31 by Michael McNeil Forbes, Elena Gubankova, W. Vincent Liu +1 · 8 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cold Atom Physics and Bose-Einstein Condensates #Quantum, superfluid, helium dynamics #cond-mat.supr-con #hep-ph

paper · pdf · doi:10.1103/physrevlett.94.017001

published as Phys.Rev.Lett.94:017001,2005 · 5 pages, REVTeX4. Minor updates in response to comments. References added

openalex publication_date 2005/01/05 · arxiv created 2005/01/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present simple, concrete, two-fermion models that exhibit thermodynamically stable isotropic translationally invariant gapless superfluid states (breached-pair superfluidity). The mass ratio between the components and the momentum structure of the interaction are crucial for determining the stability of such states: idealized, momentum-independent ("contact") interactions are insufficient.

Citations

• Chromomagnetic instability in dense quark matter
• Bardeen-Cooper-Schrieffer Theory of Superconductivity in the Case of Overlapping Bands

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