Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2007-08-07
Nucl.Phys.B793:344-361,2008
Physics
High Energy Physics
High Energy Physics - Lattice
24 pages, 12 figures
Scientific paper
10.1016/j.nuclphysb.2007.10.024
The compact Abelian Higgs model is simulated on a cubic lattice where it possesses vortex lines and pointlike magnetic monopoles as topological defects. The focus of this high-precision Monte Carlo study is on the vortex network, which is investigated by means of percolation observables. In the region of the phase diagram where the Higgs and confinement phases are separated by a first-order transition, it is shown that the vortices percolate right at the phase boundary, and that the first-order nature of the transition is reflected by the network. In the crossover region, where the phase boundary ceases to be first order, the vortices are shown to still percolate. In contrast to other observables, the percolation observables show finite-size scaling. The exponents characterizing the critical behavior of the vortices in this region are shown to fall in the random percolation universality class.
Bittner Elmar
Janke Wolfhard
Schakel Adriaan M. J.
Wenzel Sandro
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