Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1995-03-23
Nucl.Phys. B450 (1995) 452-460
Physics
High Energy Physics
High Energy Physics - Lattice
11 pages, latex, 2 figures included, uuencoded
Scientific paper
10.1016/0550-3213(95)00239-O
Monte Carlo simulations of the 4-dimensional compact U(1) lattice gauge theory in the neighborhood of the transition point are made difficult by the suppression of tunneling between the phases, which becomes very strong as soon as the volume of the lattice grows to any appreciable size. This problem can be avoided by making the monopole coupling a dynamical variable. In this manner one can circumvent the tunneling barrier by effectively riding on top of the peaks in the energy distribution which meet for sufficiently large monopole coupling. Here we present an efficient method for determining the parameters needed for this procedure, which can thus be implemented at low computational cost also on large lattices. This is particularly important for a reliable determination of the transition point. We demonstrate the working of our method on a 16^4 lattice. We obtain an equidistribution of configurations across the phase transition even for such a relatively large lattice size.
Kerler Werner
Rebbi Claudio
Weber Axel
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