Compressibility of an Ultracold Fermi Gas with Repulsive Interactions
Quantum Gases
2015-06-04 v1
Abstract
Fermi gases with repulsive interactions are characterized by measuring their compressibility as a function of interaction strength. The compressibility is obtained from in-trap density distributions monitored by phase contrast imaging. For interaction parameters k_F a > 0.25 fast decay of the gas prevents the observation of equilibrium profiles. For smaller interaction parameters, the results are adequately described by first-order perturbation theory. A novel phase contrast imaging method compensates for dispersive distortions of the images.
Keywords
Cite
@article{arxiv.1204.4229,
title = {Compressibility of an Ultracold Fermi Gas with Repulsive Interactions},
author = {Ye-Ryoung Lee and Myoung-Sun Heo and Jae-Hoon Choi and Tout T. Wang and Caleb A. Christensen and Timur M. Rvachov and Wolfgang Ketterle},
journal= {arXiv preprint arXiv:1204.4229},
year = {2015}
}
Comments
7 pages, 5 figures