THE 1D SPIN-1 2 AF-HEISENBERG MODEL IN A STAGGERED FIELD/

Authors
FLEDDERJOHANN A KARBACH M MUTTER KH
Citation
A. Fledderjohann et al., THE 1D SPIN-1 2 AF-HEISENBERG MODEL IN A STAGGERED FIELD/, The European Physical Journal. B: Condensed Matter Physics, 5(3), 1998, pp. 487-494
Citations number
37
Categorie Soggetti
Physics, Condensed Matter
Journal title
The European Physical Journal. B: Condensed Matter Physics → ACNP
ISSN journal
14346028
Volume
5
Issue
3
Year of publication
1998
Pages
487 - 494
Database
ISI
SICI code
1434-6028(1998)5:3<487:T1S2AM>2.0.ZU;2-5
Abstract
We investigate the scaling properties of the excitation energies and t ransition amplitudes of the one-dimensional spin-1/2 antiferromagnetic Heisenberg model exposed to an external perturbation. Two types of pe rturbations are discussed in detail: a staggered field and a dimerized field.