Uniformly frustrated XY model without vortex-pattern ordering
Superconductivity
2009-11-10 v1 Statistical Mechanics
Abstract
The uniformly frustrated XY model with f=1/3 on a dice lattice is shown to possess a so well developed accidental degeneracy of its ground states that the difference between the free energies of fluctuations does not lead to the stabilization of a particular vortex pattern down to zero temperature. Nonetheless, at low temperatures the system is characterized by a finite helicity modulus whose vanishing (at a finite temperature) is related with the dissociation of half-vortex pairs.
Cite
@article{arxiv.cond-mat/0409575,
title = {Uniformly frustrated XY model without vortex-pattern ordering},
author = {S. E. Korshunov},
journal= {arXiv preprint arXiv:cond-mat/0409575},
year = {2009}
}
Comments
4 pages, 3 figures