title: Dual lattice simulation of the abelian gauge-Higgs model at finite density: an exploratory proof of concept study.
abstract: The U(1) gauge-Higgs model with two flavors of opposite charge and a chemical potential is mapped exactly to a dual representation where matter fields correspond to loops of flux and the gauge fields are represented by surfaces. The complex action problem of the conventional formulation at finite chemical potential μ is overcome in the dual representation, and the partition sum has only real and nonzero contributions. We simulate the model in the dual representation using a generalized worm algorithm, explore the phase diagram, and study condensation phenomena at finite μ.
authors.affiliation: Institut für Physik, FB Theoretische Physik, Universität Graz, 8010 Graz, Austria.
authors.forename: Ydalia
authors.initials: Y
authors.lastname: Delgado Mercado
authors.forename: Christof
authors.initials: C
authors.lastname: Gattringer
authors.forename: Alexander
authors.initials: A
authors.lastname: Schmidt