Superfluidity in the interior-gap states
Condensed Matter
2016-08-31 v1
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.
Cite
@article{arxiv.cond-mat/0303185,
title = {Superfluidity in the interior-gap states},
author = {Shin-Tza Wu and Sungkit Yip},
journal= {arXiv preprint arXiv:cond-mat/0303185},
year = {2016}
}
Comments
To appear in Physical Review A