Density profiles of polarized Fermi gases confined in harmonic traps

Details Density profiles of polarized Fermi gases confined in harmonic traps Density profiles of polarized Fermi gases confined in harmonic traps

2008-11-12

arxiv.org/abs/0811.1873v2

Phys. Rev. A 79, 013616 (2009)

Physics

Condensed Matter

Other Condensed Matter

6 pages, 4 figures. We added references and modified the figures

Scientific paper

10.1103/PhysRevA.79.013616

On the basis of the phase diagram of the uniform system we calculate the density profiles of a trapped polarized Fermi gas at zero temperature using the local density approximation. By varying the overall polarization and the interaction strength we analyze the appearance of a discontinuity in the profile, signalling a first order phase transition from a superfluid inner core to a normal outer shell. The local population imbalance between the two components and the size of the various regions of the cloud corresponding to different phases are also discussed. The calculated profiles are quantitatively compared with the ones recently measured by Shin {\it et al.}, Phys. Rev. Lett. {\bf 101}, 070404 (2008).

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