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Abstract: A mixture of light and heavy atoms is considered. We study the kinetics ofthe light atoms, scattered by the heavy ones, the latter undergoing slowdiffusive motion. In three-dimensional space we claim the existence of acrossover region in energy, which separates the states of the light atomswith fast diffusion and the states with slow diffusion; the latter isdetermined by the dephasing time. For the two dimensional case we have atransition between weak localization, observed when the dephasing length isless than the localization length calculated for static scatterers, andstrong localization observed in the opposite case.



Author: E. Kogan

Source: https://arxiv.org/







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