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Georg Bruun

Spin Diffusion in Trapped Clouds of Cold Atoms with Resonant Interactions

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  • Georg Bruun
  • Christhopher Pethick, The Niels Bohr Institute, Danmark
We show that puzzling recent experimental results on spin diffusion in a strongly interacting atomic gas may be understood in terms of the predicted spin diffusion coefficient for a generic strongly interacting system. Three important features play a central role: (a) Fick’s law for diffusion must be modified to allow for the trapping potential; (b) the diffusion coefficient is inhomogeneous, due to the density variations in the cloud; and (c) the diffusion approximation fails in the outer parts of the cloud, where the mean free path is long.
Bidragets oversatte titelDiffusion af spin i kolde atomskyer med resonant vekselvirkning
TidsskriftPhysical Review Letters
Sider (fra-til)255302
Antal sider5
StatusUdgivet - 14 dec. 2011

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