Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1995-11-11
Nucl.Phys. B470 (1996) 435-453
Physics
High Energy Physics
High Energy Physics - Lattice
latex file of 21 pages plus 1 ps figure. Minor corrections in the figure. Text unchanged
Scientific paper
10.1016/0550-3213(96)00161-7
We present a high precision Monte Carlo study of the finite temperature $Z_2$ gauge theory in 2+1 dimensions. The duality with the 3D Ising spin model allows us to use powerful cluster algorithms for the simulations. For temporal extensions up to $N_t=16$ we obtain the inverse critical temperature with a statistical accuracy comparable with the most accurate results for the bulk phase transition of the 3D Ising model. We discuss the predictions of T. W. Capehart and M.E. Fisher for the dimensional crossover from 2 to 3 dimensions. Our precise data for the critical exponents and critical amplitudes confirm the Svetitsky-Yaffe conjecture. We find deviations from Olesen's prediction for the critical temperature of about 20%.
Caselle Michele
Hasenbusch Martin
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