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SU(2) Lattice gauge theory in (2+1)D

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Zeitschrift für Physik C Particles and Fields

Abstract

Cluster expansion methods are applied to theSU(2) lattice gauge model in (2+1) dimensions. Strong-coupling series are calculated for the vacuum energy per site, the axial string tension, and the scalar mass gap; while ELCE approximants are used to estimate the string tension beyond its roughening transition. The simple scaling behaviour expected of this super-renormalizable theory is clearly seen, and we estimate that in the continuum limit the string tension σ∼(0.14±0.01)g 4, while the mass gapM s ∼(2.2±0.25)g 2. More accurate Monte Carlo simulations are needed to check the universality between the Hamiltonian and Euclidean versions of this model.

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Hamer, C.J., Irving, A.C. SU(2) Lattice gauge theory in (2+1)D . Z. Phys. C - Particles and Fields 27, 307–314 (1985). https://doi.org/10.1007/BF01556621

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