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The European Physical Journal B
ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)
Abstract Volume 5 Issue 3 (1998) pp 487-494
The 1D spin-$\mathsf{\frac{1} {2}}$ AF-Heisenberg model in a staggered field
A. Fledderjohann, M. Karbach (a), K.-H. Mütter
Physics Department, University of Wuppertal, 42097 Wuppertal, Germany
Received: 27 February 1998 / Accepted: 17 April 1998
Abstract: We investigate the scaling properties of the excitation energies and transition amplitudes of the one-dimensional spin-$\frac{1} {2}$ antiferromagnetic Heisenberg model exposed to an external perturbation. Two types of perturbations are discussed in detail: a staggered field and a dimerized field.
PACS. 75.10.-b General theory and models of magnetic ordering
(a) email: karbach@wptsb.uni-wuppertal.de
Article in PDF format (389 KB)
Online publication: October 26, 1998
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