Real-Space Renormalization Group Study of Effects of Anisotropy on S=1 Random Antiferromagnetic Chain
Statistical Mechanics
2007-05-23 v2 Disordered Systems and Neural Networks
Abstract
We investigate S=1 antiferromagnetic quantum spin chain, whose exchange couplings are strongly disordered. By the real-space renomalization group method, introduced by Ma, Dasgupta, and Hu, the renormalization group flows are analyzed numerically in a plain of the anisotoropy of the exchange coupling vs. the staggered magnetic field. As the result, the Heisenberg point, which has a zero average of the exchange coupling anisotropy, is specified as the unstable fixed point against the anisotropy.
Keywords
Cite
@article{arxiv.cond-mat/0106289,
title = {Real-Space Renormalization Group Study of Effects of Anisotropy on S=1 Random Antiferromagnetic Chain},
author = {Shigeru Koikegami and Synge Todo and Hajime Takayama},
journal= {arXiv preprint arXiv:cond-mat/0106289},
year = {2007}
}
Comments
9 pages including 4 figures