A nonperturbative microscopic theory of Hamiltonian lattice gauge systems
R. F. Bishop, N. J. Davidson, Y. Xian
Abstract
A review is given of our recent application of a systematic microscopic formulation of quantum many-body theory, namely the coupled-cluster method (CCM), to Hamiltonian U(1) lattice gauge models in the pure gauge sector. It is emphasized that our CCM results represent a natural extension or resummation of the results from the strong-coupling perturbation theory.
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