Abstract
We have applied the microscopic coupled-cluster method (CCM) of many-body quantum theory to the U(1) lattice gauge models in (1+1) and (2+1) dimensions. The mode couplings and plaquette correlations are studied in detail by means of a hierarchical truncation scheme. Good numerical results for the ground-state energy have been obtained for a range of coupling constants varying from strong to weak. The systematic and nonperturbative natures of the CCM are emphasized.
| Original language | English |
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| Pages (from-to) | 541-555 |
| Number of pages | 15 |
| Journal | Acta Physica Polonica B : Elementary Particle Physics, Nuclear Physics, Statistical Physics, Theory of Relativity, Field Theory |
| Volume | 24 |
| Issue number | 3 |
| Publication status | Published - 1993 |