Stability Criteria for Breached Pair Superfluidity

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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.
5 pages, REVTeX4. Minor updates in response to comments. References added

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High Energy Physics - Phenomenology, Superconductivity

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http://salesiana.dossiersoluciones.com/handle/123456789/197321

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0405059
 http://arxiv.org/abs/hep-ph/0405059
 Phys.Rev.Lett.94:017001,2005
 doi:10.1103/PhysRevLett.94.017001

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arXiv