Entanglement and exotic superfluidity in spin-imbalanced lattices
Superconductivity
2017-08-30 v1
Abstract
We investigate the properties of entanglement in one-dimensional fermionic lattices at the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) superfluid regime. By analyzing occupation probabilities, which are concepts closely related to FFLO and entanglement, we obtain approximate analytical expressions for the spin-flip processes at the FFLO regime. We also apply density matrix renormalization group calculations to obtain the exact ground-state entanglement of the system in superfluid and non-superfluid regimes. Our results reveal a breaking pairs avalanche appearing precisely at the FFLO-normal phase transition. We find that entanglement is non-monotonic in superfluid regimes, feature that could be used as a signature of exotic superfluidity.
Keywords
Cite
@article{arxiv.1708.08894,
title = {Entanglement and exotic superfluidity in spin-imbalanced lattices},
author = {Vivian V. França},
journal= {arXiv preprint arXiv:1708.08894},
year = {2017}
}