Phase Diagram of the Abelian Higgs Model Using the Auxiliary Mass Method
Abstract
We study a phase transition in the Abelian Higgs model at finite temperature using the auxiliary mass method. We vary the gauge coupling constant q and the scalar selfcoupling constant λ. We find that a firstorder phase transition disappears at a tricritical point. It can be fit by the form q^{2}~λ^{ζ} very well. The value of the parameter ζ depends on the range of λ . Our results can be applied to experiments on hightemperature superconductors and liquid crystals. In particular, the tricritical point is κ_{c}=0.28 for superconductors, where q=2e.
 Publication:

Progress of Theoretical Physics
 Pub Date:
 September 2001
 DOI:
 10.1143/PTP.106.603
 Bibcode:
 2001PThPh.106..603O