Vortex-line percolation in the three-dimensional complex |psi|^4 model

Details Vortex-line percolation in the three-dimensional complex |psi|^4 model Vortex-line percolation in the three-dimensional complex |psi|^4 model

2005-10-13

arxiv.org/abs/cond-mat/0510347v1

Phys. Rev. B 72 (2005) 094511

Physics

Condensed Matter

Superconductivity

11 pages, 9 figures

Scientific paper

10.1103/PhysRevB.72.094511

In discussing the phase transition of the three-dimensional complex |psi|^4 theory, we study the geometrically defined vortex-loop network as well as the magnetic properties of the system in the vicinity of the critical point. Using high-precision Monte Carlo techniques we investigate if both of them exhibit the same critical behavior leading to the same critical exponents and hence to a consistent description of the phase transition. Different percolation observables are taken into account and compared with each other. We find that different connectivity definitions for constructing the vortex-loop network lead to different results in the thermodynamic limit, and the percolation thresholds do not coincide with the thermodynamic phase transition point.

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