Coordinate Independence of of Quantum-Mechanical Path Integrals
H. Kleinert, A. Chervyakov
Abstract
We develop simple rules for performing integrals over products of distributions in coordinate space. Such products occur in perturbation expansions of path integrals in curvilinear coordinates, where the interactions contain terms of the form dot q2 qn, which give rise to highly singular Feynman integrals. The new rules ensure the invariance of perturbatively defined path integrals under coordinate transformations.
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