Induced interaction in a spin-polarized Fermi gas
Quantum Gases
2010-07-12 v1 Strongly Correlated Electrons
Superconductivity
Abstract
We study the effect of the induced interaction on the superfluidtransition temperature of a spin-polarized Fermi gas. In the BCS limit, the polarization is very small in the superfluid state, and the effect of the induced interaction is almost the same as in the spin-balanced case. The temperature Tt and the polarization Pt of the tricritical point are both reduced from mean-field results by a factor about 2.22. This reduction is also significant beyond the BCS limit. In the unitary limit, we find (Pt,Tt/TF)=(0.42,0.16), in comparison with mean-field and experimental results.
Keywords
Cite
@article{arxiv.1007.1506,
title = {Induced interaction in a spin-polarized Fermi gas},
author = {Zeng-Qiang Yu and Lan Yin},
journal= {arXiv preprint arXiv:1007.1506},
year = {2010}
}
Comments
6 pages, 2 figures