Finite-size spectrum, magnon interactions, and magnetization of S=1 Heisenberg spin chains

Authors
Lou, JZ Qin, SJ Ng, TK Su, ZB Affleck, I
Citation
Jz. Lou et al., Finite-size spectrum, magnon interactions, and magnetization of S=1 Heisenberg spin chains, PHYS REV B, 62(6), 2000, pp. 3786-3794
Citations number
33
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
6
Year of publication
2000
Pages
3786 - 3794
Database
ISI
SICI code
0163-1829(20000801)62:6<3786:FSMIAM>2.0.ZU;2-F
Abstract
We report on density-matrix renormalization-group and analytical work on S= 1 antiferromagnetic Heisenberg spin chains. We study the finite-size behavi or within the framework of the nonlinear sigma model. We study the effect o f magnon-magnon interactions on the finite-size spectrum and on the magneti zation curve close to the critical magnetic field, determine the magnon sca ttering length, and compare it to the prediction from the nonlinear sigma m odel.