Non-local quantum fluctuations and fermionic superfluidity in the imbalanced attractive Hubbard model
Quantum Gases
2015-06-18 v2 Strongly Correlated Electrons
Superconductivity
Abstract
We study fermionic superfluidity in strongly anisotropic optical lattices with attractive interactions utilizing the cluster DMFT method, and focusing in particular on the role of non-local quantum fluctuations. We show that non-local quantum fluctuations impact the BCS superfluid transition dramatically. Moreover, we show that exotic superfluid states with delicate order parameter structure, such as the Fulde-Ferrell-Larkin-Ovchinnikov phase driven by spin population imbalance, can emerge even in the presence of such strong fluctuations.
Cite
@article{arxiv.1402.6939,
title = {Non-local quantum fluctuations and fermionic superfluidity in the imbalanced attractive Hubbard model},
author = {M. O. J. Heikkinen and D. -H. Kim and M. Troyer and P. Törmä},
journal= {arXiv preprint arXiv:1402.6939},
year = {2015}
}
Comments
5 pages, 3 figures