Superfluidity in the interior-gap states

Preprint

11 March 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0303185

Abstract

We investigate superfluidity in the interior-gap states proposed by Liu and Wilczek. At weak coupling, we find the {\em gapless} interior-gap state unstable in physically accessible regimes of the parameter space, where the superfluid density is shown to be always negative. We therefore conclude that the spatially-uniform interior-gap phase is extremely unstable unless it is fully gapped; in this case, however, the state is rather similar to conventional BCS states.

Keywords

INVESTIGATE SUPERFLUIDITY
INTERIOR GAP STATES
SUPERFLUID DENSITY
ACCESSIBLE REGIMES
STATES PROPOSED
SUPERFLUIDITY
INTERIOR GAP

All Related Versions

Version 1, 2003-03-11, ArXiv
Published version: Physical Review A, 67 (5), 053603.

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