Interband physics in an ultra-cold Fermi gas in an optical lattice
Statistical Mechanics
2009-11-13 v2 Superconductivity
Abstract
We study a gas of strongly polarized cold fermions in an optical lattice when the excited p-bands are populated. We derive the relevant Hamiltonian and discuss the expected phase diagram for both repulsive and attractive interactions. In the parameter regime covered here, checkerboard anti-ferromagnetic ordering is found to be possible for repulsive interactions while for attractive interactions, transitions between different types of paired phases are predicted.
Keywords
Cite
@article{arxiv.0804.3280,
title = {Interband physics in an ultra-cold Fermi gas in an optical lattice},
author = {J. -P. Martikainen and E. Lundh and T. Paananen},
journal= {arXiv preprint arXiv:0804.3280},
year = {2009}
}
Comments
5 pages, 2 figures