Path integral on a group manifold and the lattice gauge theory Hamiltonian |
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Authors: | J. Bartels N. K. Falck |
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Affiliation: | 1. II. Institut für Theoretische Physik der Universit?t Hamburg, D-2000, Hamburg, Federal Republic of Germany
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Abstract: | For a quantum mechanical system living on the manifold of a compact simple Lie group we present explicit formulae for the quantum corrections, both in the Hamiltonian and, for the most common time discretization, in the path integral. As a special application of this rather general procedure, we compare, for lattice gauge theories, the path integral corresponding to the Kogut-Susskind Hamiltonian and the Wilson action. The latter is shown to correspond to a very special but elegant way of discretizing the time variable. |
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