Physics – Condensed Matter – Quantum Gases
Scientific paper
2010-07-27
Phys. Rev. A 82, 033605 (2010)
Physics
Condensed Matter
Quantum Gases
12 pages, 8 figures
Scientific paper
10.1103/PhysRevA.82.033605
We develop a meanfield 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.
Baillie D.
Blakie Blair P.
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