Journal
PHYSICAL REVIEW A
Volume 79, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.013616
Keywords
Bose-Einstein condensation; density functional theory; fermion systems; phase diagrams; phase transformations; superfluidity
Categories
Funding
- European Science Foundation EUROCORES Program EuroQUAM-FerMix
- CNR
- EC Sixth Framework Program
- Ministero dell'Istruzione
- dell'Universit e della Ricerca (MIUR)
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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, signaling 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 [Phys. Rev. Lett. 101, 070404 (2008)].
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