Dimensional crossover in a spin-imbalanced Fermi gas
Published version
Peer-reviewed
Repository URI
Repository DOI
Change log
Authors
Dutta, Shovan https://orcid.org/0000-0002-3534-6920
Mueller, Erich J
Abstract
We model the one-dimension (1D) to three-dimension (3D) crossover in a cylindrically trapped Fermi gas with attractive interactions and spin-imbalance. We calculate the mean-field phase diagram, and study the relative stability of exotic superfluid phases as a function of interaction strength and temperature. For weak interactions and low density, we find 1D-like behavior, which repeats as a function of the chemical potential as new channels open. For strong interactions, mixing of single-particle levels gives 3D-like behavior at all densities. Furthermore, we map the system to an effective 1D model, finding significant density dependence of the effective 1D scattering length.
Description
Keywords
cond-mat.quant-gas, cond-mat.quant-gas
Journal Title
PHYSICAL REVIEW A
Conference Name
Journal ISSN
2469-9926
2469-9934
2469-9934
Volume Title
94
Publisher
American Physical Society (APS)
Publisher DOI
Rights
Publisher's own licence
Sponsorship
National Science Foundation Grant No. PHY-1508300