We present a family of finite-volume criteria which cover the regime of exponential decay for the fractional moments of Green functions of operators with random potentials. Such decay is a technically convenient characterization of localization for it is known to imply spectral localization, absence of level repulsion, dynamical localization and a related condition which plays a significant role in the quantization of the Hall conductance in two-dimensional Fermi gases. The constructive criteria also preclude fast power-law decay of the Green functions at mobility edges.
|Number of pages
|Physica A: Statistical Mechanics and its Applications
|Published - May 1 2000
All Science Journal Classification (ASJC) codes
- Statistical and Nonlinear Physics
- Statistics and Probability