Topological order and the deconfinement transition in the (2+1)-dimensional compact Abelian Higgs model
2005
We study an Abelian compact gauge theory minimally coupled to bosonic matter with charge q, which may undergo a confinement-deconfinement transition in 2+1 dimensions. The transition is analyzed using a nonlocal order parameter W-tilde, which is related to large Wilson loops for fractional charges. We map the model to a dual representation with no gauge field but only a global q-state clock symmetry and show that W-tilde corresponds to the domain wall energy of that model. W-tilde is also directly connected to the concept of topological order. We exploit these facts in Monte Carlo simulations to study the detailed nature of the deconfinement transition.
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