期刊
PHYSICAL REVIEW A
卷 79, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.051601
关键词
Boltzmann equation; fermion systems; HF calculations; lithium; spin waves
资金
- NSF [PHY-0758104]
- Division Of Physics
- Direct For Mathematical & Physical Scien [GRANTS:13906697, 0758104] Funding Source: National Science Foundation
We explain the spin segregation seen at Duke in a two-component gas of Li-6 [X. Du, L. Luo, B. Clancy, and J. E. Thomas, Phys. Rev. Lett. 101, 150401 (2008)] as a mean-field effect describable via a collisionless Boltzmann equation. As seen in experiments, we find that slight differences in the trapping potentials in the two spin states drive small spin currents. The Hartree-Fock-type interactions convert these currents into a redistribution of populations in energy space, and consequently a long-lived spin texture develops. We explore the interaction strength dependence of these dynamics, finding nontrivial dependence on system parameters and close agreement with experiment.
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