Mesoscopic Fluctuations of Eigenfunctions and "Level Velocity" Distribution in Disordered Metals

Abstract

We calculate the distribution of eigenfunction amplitudes and the variance of the ``inverse participation ratio'' (IPR) in disordered metallic samples. A relation is established between the distribution function of IPR and that of ``level velocities'' -- parametric derivatives of energy levels with respect to a random perturbation.

REVTEX, 7 pages

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