Abstract
The coupled-cluster method is a very powerful method of quantum many-body theory which has recently been applied to Hamiltonian formulations of lattice gauge field theories. Previous calculations in the U(1) model in 2+1 dimensions have employed a local approximation scheme in which only correlations between adjacent plaquettes are taken into account. Here, we extend these calculations to include longer-ranged two-plaquette correlations, and also apply the localapproximation scheme to the U(1) model in 3+1 dimensions.
| Original language | English |
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| Pages (from-to) | 817-819 |
| Number of pages | 3 |
| Journal | Nuclear Physics B (Proceedings Supplements) |
| Volume | 42 |
| DOIs | |
| Publication status | Published - 1995 |