INTEGRABLE MODELS OF COUPLED HEISENBERG-CHAINS

Authors
FRAHM H RODENBECK C
Citation
H. Frahm et C. Rodenbeck, INTEGRABLE MODELS OF COUPLED HEISENBERG-CHAINS, Europhysics letters, 33(1), 1996, pp. 47-52
Citations number
18
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
33
Issue
1
Year of publication
1996
Pages
47 - 52
Database
ISI
SICI code
0295-5075(1996)33:1<47:IMOCH>2.0.ZU;2-L
Abstract
We show that the solutions of the Yang-Baxter equation invariant under the action of the Yangian Y(sl(2)) lead to inhomogeneous vertex model s. Starting from a four-dimensional representation of Y(sl(2)), we obt ain an integrable family of coupled Heisenberg spin-1/2 chains. Some t hermodynamical properties of this model are studied by means of the al gebraic Bethe ansatz.