CRITICAL-BEHAVIOR OF THE S=3 2 ANTIFERROMAGNETIC HEISENBERG CHAIN/

Authors
HALLBERG K WANG XQG HORSCH P MOREO A
Citation
K. Hallberg et al., CRITICAL-BEHAVIOR OF THE S=3 2 ANTIFERROMAGNETIC HEISENBERG CHAIN/, Physical review letters, 76(26), 1996, pp. 4955-4958
Citations number
38
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
26
Year of publication
1996
Pages
4955 - 4958
Database
ISI
SICI code
0031-9007(1996)76:26<4955:COTS2A>2.0.ZU;2-L
Abstract
Using the density-matrix renormalization-group technique we study the long-wavelength properties of the spin S = 3/2 nearest-neighbor Heisen berg chain. We obtain an accurate value for the spin velocity upsilon = 3.87 +/- 0.02, in agreement with experiment. Our results show conclu sively that the model belongs to the same universality class as the S = 1/2 Heisenberg chain, with a conformal central charge c = 1 and crit ical exponent eta = 1.