The 1D spin-1/2 AF-Heisenberg model in a staggered field

Details The 1D spin-1/2 AF-Heisenberg model in a staggered field The 1D spin-1/2 AF-Heisenberg model in a staggered field

1998-06-03

arxiv.org/abs/cond-mat/9806039v2

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 6 figures, to be published in Euro. Phys. J. B, LaTeX-class svjour from Springer

Scientific paper

10.1007/s100510050470

We investigate the scaling properties of the excitation energies and
transition amplitudes of the one-dimensional spin-$1\over 2$ antiferromagnetic
Heisenberg model exposed to an external perturbation. Two types of
perturbations are discussed in detail: a staggered field and a dimerized field.

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