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arXiv · 0907.1757

Free Expansion of a Weakly-interacting Dipolar Fermi Gas

Takushi Nishimura·Tomoyuki Maruyama
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Abstract

We theoretically investigate a polarized dipolar Fermi gas in free expansion. The inter-particle dipolar interaction deforms phase-space distribution in trap and also in the expansion. We exactly predict the minimal quadrupole deformation in the expansion for the high-temperature Maxwell-Boltzmann and zero-temperature Thomas-Fermi gases in the Hartree-Fock and Landau-Vlasov approaches. In conclusion, we provide a proper approach to develop the time-of-flight method for the weakly-interacting dipolar Fermi gas and also reveal a scaling law associated with the Liouville's theorem in the long-time behaviors of the both gases.

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Takushi Nishimura, Tomoyuki Maruyama. 2010-06-20. Free Expansion of a Weakly-interacting Dipolar Fermi Gas. https://doi.org/10.1143/jpsj.79.083001

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