Volume 69, Number 2, January 2005
|Page(s)||256 - 262|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||17 December 2004|
Topological order in the (2+1)D compact lattice superconductor
Department of Physics, Royal Institute of Technology, AlbaNova SE-106 91 Stockholm, Sweden
2 Fysikum, Stockholm University, AlbaNova - SE-106 91 Stockholm, Sweden
Accepted: 4 November 2004
We study topological aspects of a compact lattice superconductor, and show that the characteristic energy splitting, Δ, between almost degenerate ground states, is simply related to a novel order parameter , which is closely related to large Wilson loops. Using Monte Carlo methods, we study the scaling properties of close to the deconfining phase transition, and conclude that , where L is the size of the system, thus giving quantitative support to the vortex tunneling scenario proposed by Wen.
PACS: 74.20.-z – Theories and models of superconducting state / 11.15.Ha – Lattice gauge theory / 71.10.Hf – Non-Fermi-liquid ground states, electron phase diagrams and phase transitions in model systems
© EDP Sciences, 2005
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