Temperature-dependent spatial oscillations in the correlations of the XXZ spin chain

Authors
Fabricius, K Klumper, A McCoy, BM
Citation
K. Fabricius et al., Temperature-dependent spatial oscillations in the correlations of the XXZ spin chain, PHYS REV L, 82(26), 1999, pp. 5365-5368
Citations number
13
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
82
Issue
26
Year of publication
1999
Pages
5365 - 5368
Database
ISI
SICI code
0031-9007(19990628)82:26<5365:TSOITC>2.0.ZU;2-G
Abstract
We study the correlation [sigma(o)(z)sigma(n)(z)] for the XXZ chain in the massless attractive (ferromagnetic) region at positive temperatures by mean s of a numerical study of the quantum transfer matrix. We find that there i s a range of temperature where the behavior of the correlation for large se parations is oscillatory with an incommensurate period which depends on tem perature.