Abstract
The properties of the confinement-Higgs phase transition in the SU(2)-Higgs model with fixed modulus are investigated. We show that the system exhibits a transient behavior up to L = 24 along which the order of the phase transition cannot be discerned. To get stronger conclusions about this point, without going to prohibitively large lattice sizes, we have introduced a second (next-to-nearest neighbors) gauge-Higgs coupling ( κ 2). On this extended parameter space we find a line of phase transitions which become increasingly weaker as κ 2 → 0. The results point to a first-order character for the transition with the standard action ( κ 2 = 0).
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