Wannier ladders and perturbation theory
- 7 April 1993
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 26 (7) , L379-L384
- https://doi.org/10.1088/0305-4470/26/7/006
Abstract
Following Avron (1982) the authors consider the Stark effect for Bloch electrons in the case of a finite number of gaps. They prove that the ladders of resonances are given by the Wannier decoupled-band approximation and the perturbation theory. The Fermi golden rule yields the width behaviour of Buslaev and Dmitirieva (1990).Keywords
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