Density profiles of polarized Fermi gases confined in harmonic traps

被引：13
作者：
Bertaina, G. [1 ]
Giorgini, S.
机构：
[1] Univ Trento, Dipartimento Fis, I-38050 Povo, Italy
来源：
PHYSICAL REVIEW A | 2009年 / 79卷 / 01期
关键词：
Bose-Einstein condensation; density functional theory; fermion systems; phase diagrams; phase transformations; superfluidity;
D O I：
10.1103/PhysRevA.79.013616
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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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页数：6
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