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arXiv · hep-ph/0405059

Stability Criteria for Breached Pair Superfluidity

Michael McNeil Forbes·Elena Gubankova·W. Vincent Liu·Frank Wilczek
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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.

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Michael McNeil Forbes, Elena Gubankova, W. Vincent Liu, Frank Wilczek. 2005-01-25. Stability Criteria for Breached Pair Superfluidity. https://doi.org/10.1103/physrevlett.94.017001

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