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arXiv · 0907.3017

Spin drag in noncondensed Bose gases

R. A. Duine·H. T. C. Stoof
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Abstract

We show how time-dependent magnetic fields lead to spin motive forces and spin drag in a spinor Bose gas. We propose to observe these effects in a toroidal trap and analyze this particular proposal in some detail. In the linear-response regime we define a transport coefficient that is analogous to the usual drag resistivity in electron bilayer systems. Due to Bose enhancement of atom-atom scattering, this coefficient strongly increases as temperature is lowered. We also investigate the effects of heating.

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R. A. Duine, H. T. C. Stoof. 2009-07-17. Spin drag in noncondensed Bose gases. https://doi.org/10.1103/physrevlett.103.170401

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