| Issue |
Europhys. Lett.
Volume 69, Number 2, January 2005
|
|
|---|---|---|
| Page(s) | 256 - 262 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2004-10320-5 | |
| Published online | 17 December 2004 | |
Topological order in the (2+1)D compact lattice superconductor
1
Department of Physics, Royal Institute of Technology, AlbaNova SE-106 91 Stockholm, Sweden
2
Fysikum, Stockholm University, AlbaNova - SE-106 91 Stockholm, Sweden
Received:
13
September
2004
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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