Longitudinal spin waves in a dilute Bose gas

Details Longitudinal spin waves in a dilute Bose gas Longitudinal spin waves in a dilute Bose gas

2001-12-29

arxiv.org/abs/cond-mat/0112487v1

Physics

Condensed Matter

4.5 pages, 3 embedded color figures

Scientific paper

10.1103/PhysRevLett.88.230405

We present a kinetic theory for a dilute noncondensed Bose gas of two-level atoms that predicts the transient spin segregation observed in a recent experiment. The underlying mechanism driving spin currents in the gas is due to a mean field effect arising from the quantum interference between the direct and exchange scattering of atoms in different spin states. We numerically solve the spin Boltzmann equation, using a one dimensional model, and find excellent agreement with experimental data.

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