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Longitudinal spin waves in a dilute Bose gas

J. E. Williams·T. Nikuni·Charles W. Clark
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Abstract

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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J. E. Williams, T. Nikuni, Charles W. Clark. 2001-12-29. Longitudinal spin waves in a dilute Bose gas. https://doi.org/10.1103/physrevlett.88.230405

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