Topological and phase structure of an effective double-Higgs model
for high-Tc superconductivity and gluodynamics
Presenter: Arwed Schiller
M.N. Chernodub, E.-M. Ilgenfritz, A. Schiller
Abstract: We study the 3D Abelian Higgs model with two scalar fields of charges
Q1 and Q2 in their London limits interacting via exchange of a compact gauge
field. The model attracts interest because of its relevance for high-Tc superconductors and has been proposed as a toy model for the non-perturbative properies
of Yang-Mills theory. The model has a rich phase structure due to three types
of topological excitations, ANO vortices related to the two Higgs fields and
monopoles. We present the phase diagram in the parameter space of the gauge
and two Higgs couplings using thermodynamic and topological expectation values. Cluster properties of the topological excitations are studied.
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