Connectivity transition in the frustrated S=1 chain revisited
Strongly Correlated Electrons
2009-11-07 v1
Abstract
The phase transition in the antiferromagnetic isotropic Heisenberg S=1 chain with frustrating next-nearest neighbor coupling alpha is reconsidered. We identify the order parameter of the large-alpha phase as describing two intertwined strings, each possessing a usual string order. The transition has a topological nature determined by the change in the string connectivity. Numerical evidence from the DMRG results is supported by the effective theory based on soliton states.
Cite
@article{arxiv.cond-mat/0110095,
title = {Connectivity transition in the frustrated S=1 chain revisited},
author = {A. K. Kolezhuk and U. Schollwoeck},
journal= {arXiv preprint arXiv:cond-mat/0110095},
year = {2009}
}
Comments
4 pages, 2 figures, Revtex 4, submitted to PRB