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.
Pages
711-716
Volume
138
Issue
3-4
Recommended Citation
Mullin, WJ and Ragan, RJ, "Anisotropic spin diffusion in trapped Boltzmann gases" (2005). JOURNAL OF LOW TEMPERATURE PHYSICS. 38.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/38
Comments
This is the pre-published version which is collected from arXiv. The published version is at http://www.springerlink.com/content/j08472l52r750026/