Compact Lattice QED and the Coulomb Potential
Y. N. Srivstava, A. Widom, M. H. Friedman, O. Panella
Abstract
The potential energy of a static charge distribution on a lattice is rigorously computed in the standard compact quantum electrodynamic model. The method used follows closely that of Weyl for ordinary quantum electrodynamics in continuous space-time. The potential energy of the static charge distribution is independent of temperature and can be calculated from the lattice version of Poisson's equation. It is the usual Coulomb potential.
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