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Regensburg 2010 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 8: Quantum Dynamics, Decoherence, and Quantum Information I

DY 8.7: Talk

Tuesday, March 23, 2010, 11:30–11:45, H38

Transport dynamics below the localization length in the 3-d Anderson model — •Jochen Gemmer1, Robin Steinigeweg2, and Hendrik Niemeyer11University Osnabrueck, Physics Departement — 2University Braunschweig, Physics Departement

As wellknwon the Anderson model shows localization at all energies if the on-site disorder exeeds some critical value. However, below the critical disorder there are non-localized energy regimes, furthermore there may be relevant spatial dynamics on scales below the localization length at all regimes. We analyze those dynamics finding that they may be described as diffusive with quantitative diffusion coefficients and meaningful mean free paths, particle velocities, etc. This is shown to hold for all degrees of disorder up to the critical disorder.

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