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Fluctuating hydrodynamics of the classical electron gas
Ist Teil von
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 1994-05, Vol.49 (5), p.R3565-R3567
Ort / Verlag
United States
Erscheinungsjahr
1994
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Fluctuations of the diffusion tensor in a lattice Lorentz gas model are calculated numerically from a sample of mesoscopic-size systems, and used as input in a mode-coupling expression that predicts long-time tail amplitudes. The results are in good agreement with previously published direct measurements of the tail amplitude over a wide range of scatterer concentrations. We argue that the previous, long-standing disagreement between theory and simulations comes from concentration-independent configurational fluctuations in the diffusion tensor, which we have measured separately and which are not taken into account by existing theories.