Fields topology and perturbation theory
Abstract
Description
The fields nonlinear modes quantization scheme is discussed. New form of the perturbation theory achieved by unitary mapping the quantum dynamics in the space $W_G$ of (action, angle)-type collective variables. It is shown why the transformed perturbation theory contributions may accumulated exactly on the boundary $\pa W_G$. Abilities of the developed formalism are illustrated by examples from quantum mechanics and field theory.
14 pp., LaTex, no figures. Talk given at XXXIII PINP Winter School, Gatchina, Febr. 8-12, 1999
14 pp., LaTex, no figures. Talk given at XXXIII PINP Winter School, Gatchina, Febr. 8-12, 1999