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Perturbation theory in the invariant subspace

J. Manjavidze

hep-tharXiv:hep-th/9801188

Abstract

The unitary transformation of path-integral differential measure is described. The main properties of perturbation theory in the phase space of action-angle, energy-time variables are investigated. The measure in cylindrical coordinates is derived also. The dependence of perturbation theory contributions from global (topological) properties of corresponding phase spaces is shown.

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