Perturbation theory for the two-dimensional polaron in a magnetic field
- 15 January 1986
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 33 (2) , 799-806
- https://doi.org/10.1103/physrevb.33.799
Abstract
The ground-state energy of a two-dimensional polaron in a magnetic field is evaluated in fourth-order perturbation theory by a novel method. In this method complicated sums over products of matrix elements and energy denominators are replaced by simple algebraic manipulations of operators. An analytical expression is derived for the high-magnetic-field limit; in that limit the sixth-order perturbation contribution is also determined.This publication has 6 references indexed in Scilit:
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