Publication Date

2005

Journal or Book Title

JOURNAL OF LOW TEMPERATURE PHYSICS

Abstract

Recent experiments in a mixture of two hyperfine states of trapped Bose gases show behavior analogous to a spin-1/2 system, including transverse spin waves and other familiar Leggett-Rice-type effects. We have derived the kinetic equations applicable to these systems, including the spin dependence of interparticle interactions in the collision integral, and have solved for spin-wave frequencies and longitudinal and transverse diffusion constants in the Boltzmann limit. We find that, while the transverse and longitudinal collision times for trapped Fermi gases are identical, the Bose gas shows diffusion anisotropy. Moreover, the lack of spin isotropy in the interactions leads to the non-conservation of transverse spin, which in turn has novel effects on the hydrodynamic modes.

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://www.springerlink.com/content/j08472l52r750026/

Volume

138

Pages

711-716

Issue

3-4

Included in

Physics Commons

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