Thermodynamics and coherence of a trapped dipolar Fermi gas

被引:24
作者
Baillie, D. [1 ]
Blakie, P. B. [1 ]
机构
[1] Univ Otago, Dept Phys, Jack Dodd Ctr Quantum Technol, Dunedin, New Zealand
来源
PHYSICAL REVIEW A | 2010年 / 82卷 / 03期
关键词
D O I
10.1103/PhysRevA.82.033605
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We develop a mean-field treatment of a polarized trapped Fermi gas with dipole-dipole interactions. Our approach is based on self-consistent semiclassical Hartree-Fock theory that accounts for direct and exchange interactions. We discuss our procedure for numerically implementing the calculation. We study the thermodynamic and the first- and second-order correlation properties of the system. We find that the system entropy depends on the trap geometry, allowing the system to be cooled as the trap aspect ratio is increased, and that exchange interactions cause the correlation functions to be anisotropic in the low-temperature regime. We also find that many uniform gas thermodynamic predictions, for which direct interaction effects vanish, are qualitatively unreliable for trapped systems, most notably for oblate traps. We develop a simplified Hartree formalism that is applicable to anisotropic harmonic traps.
引用
收藏
页数:11
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