BCS-BEC crossover with a finite-range interaction
Other Condensed Matter
2009-11-10 v1 Superconductivity
High Energy Physics - Phenomenology
Nuclear Theory
Abstract
We study the crossover from BEC to BCS pairing for dilute systems but with a realistic finite-range interaction. We exhibit the changes in the excitation spectrum that provide a clean qualitative distinction between the two limits. We also study how the dilute system converges to the results from a zero-range pseudo-potential derived by Leggett.
Cite
@article{arxiv.cond-mat/0410131,
title = {BCS-BEC crossover with a finite-range interaction},
author = {Meera M. Parish and Bogdan Mihaila and Eddy M. Timmermans and Krastan B. Blagoev and Peter B. Littlewood},
journal= {arXiv preprint arXiv:cond-mat/0410131},
year = {2009}
}
Comments
9 figures