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arXiv · hep-lat/9305011

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

L. A. Fernandez·A. Munoz Sudupe·J. J. Ruiz-Lorenzo·A. Tarancon
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Abstract

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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L. A. Fernandez, A. Munoz Sudupe, J. J. Ruiz-Lorenzo, A. Tarancon. 1993-05-10. The Coulomb-Higgs phase transition in Z(8) and q=8 U(1)-Higgs models. https://doi.org/10.1016/0370-2693(93)91085-2

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