We investigate the scaling properties of the excitation energies and transition amplitudes of the one-dimensional spin-21 antiferromagnetic Heisenberg model exposed to an external perturbation. Two types of perturbations are discussed in detail: a staggered field and a dimerized field.
@article{arxiv.cond-mat/9806039,
title = {The 1D spin-1/2 AF-Heisenberg model in a staggered field},
author = {A. Fledderjohann and M. Karbach and K. -H. Mütter},
journal= {arXiv preprint arXiv:cond-mat/9806039},
year = {2009}
}
Comments
10 pages, 6 figures, to be published in Euro. Phys. J. B, LaTeX-class svjour from Springer