The Coulomb-Higgs phase transition in Z(8) and q=8 U(1)-Higgs models

Details The Coulomb-Higgs phase transition in Z(8) and q=8 U(1)-Higgs models The Coulomb-Higgs phase transition in Z(8) and q=8 U(1)-Higgs models

1993-05-10

arxiv.org/abs/hep-lat/9305011v1

Phys.Lett. B312 (1993) 305-309

Physics

High Energy Physics

High Energy Physics - Lattice

Document in postscript; 6 pages including 3 figures. Preprint FT/UCM/5/93

Scientific paper

10.1016/0370-2693(93)91085-2

The Coulomb-Higgs phase transition of the four dimensional Z$_8$ gauge model is studied. We find clear first order properties in contradiction with the previously stressed second order behavior. That transition point may be regarded as the end of a transition line of the U(1)-Higgs model with charge $q=8$, that has been also assumed of second order. We show that this line is first order in a wide region, with a decreasing latent heat that goes to zero when closing to the 4--$d$ XY model limit.

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