Resonant superfluidity in the Rabi-coupled spin-dependent Fermi-Hubbard model
Quantum Gases
2022-10-21 v2
Abstract
We investigate the ground-state phase diagram of the one-dimensional attractive Fermi-Hubbard model with spin-dependent hoppings and an on-site Rabi coupling using the density matrix renormalization group method. In particular, we show that even in the limit of one component being immobile the pair superfluidity can be resonantly enhanced when the Rabi coupling is on the order of the interaction strength just before the system starts to strongly polarize. We derive an effective spin-1/2 XXZ model in order to understand the ground-state properties in the strong attraction limit.
Keywords
Cite
@article{arxiv.2203.04523,
title = {Resonant superfluidity in the Rabi-coupled spin-dependent Fermi-Hubbard model},
author = {Mathias Mikkelsen and Ryui Kaneko and Daichi Kagamihara and Ippei Danshita},
journal= {arXiv preprint arXiv:2203.04523},
year = {2022}
}
Comments
11 pages, 6 figures