Impurity corrections to the thermodynamics in spin chains using a transfer-matrix DMRG method

Citation
S. Rommer et S. Eggert, Impurity corrections to the thermodynamics in spin chains using a transfer-matrix DMRG method, PHYS REV B, 59(9), 1999, pp. 6301-6308
Citations number
21
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B-CONDENSED MATTER
ISSN journal
0163-1829 → ACNP
Volume
59
Issue
9
Year of publication
1999
Pages
6301 - 6308
Database
ISI
SICI code
0163-1829(19990301)59:9<6301:ICTTTI>2.0.ZU;2-8
Abstract
We use the density-matrix renormalization group for transfer matrices to nu merically calculate impurity corrections to thermodynamic properties. The m ethod is applied to two impurity models in the spin-1/2 chain, namely a wea k link in the chain and an external impurity spin, The numerical analysis c onfirms the field theory calculations and gives explicit results for the cr ossover behavior. [S0163-1829(99)01606-9].