Ground state fluctuations in rung-dimerised spin ladders
Strongly Correlated Electrons
2009-08-04 v1
Abstract
Treating an exactly rung-dimerized spin ladder as a reference model we study perturbatively zero temperature quantum fluctuations in spin ladders with slightly destroyed rung-dimerization. Analytic expressions are obtained for the gas parameter (density of rung-triplets) and the ground state energy per rung. At a strong diagonal frustration as well as at a rather strong antiferromagnetic rung coupling these results well agree with the previous numerical calculations.
Keywords
Cite
@article{arxiv.0908.0125,
title = {Ground state fluctuations in rung-dimerised spin ladders},
author = {P. N. Bibikov},
journal= {arXiv preprint arXiv:0908.0125},
year = {2009}
}
Comments
4 pages