Compressibility of an ultracold Fermi gas with repulsive interactions
Author(s)Choi, Jae-Hoon; Christensen, Caleb A.; Heo, Myoung-Sun; Ketterle, Wolfgang; Lee, Ye-Ryoung; Rvachov, Timur Michael; Wang, Tout T.; ... Show more Show less
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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[subscript 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. We have developed a phase-contrast imaging method that compensates for dispersive distortions of the images.
DepartmentHarvard-MIT Center for Ultracold Atoms; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics
Physical Review A
American Physical Society
Lee, Ye-Ryoung et al. “Compressibility of an Ultracold Fermi Gas with Repulsive Interactions.” Physical Review A 85.6 (2012): 063615. © 2012 American Physical Society.
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