Integrable models of coupled Heisenberg chains

Details Integrable models of coupled Heisenberg chains Integrable models of coupled Heisenberg chains

1995-02-22

arxiv.org/abs/cond-mat/9502090v1

Europhys. Lett. 33 (1996) 47-52

Physics

Condensed Matter

10 pages, latex, 5 postscript figures

Scientific paper

10.1209/epl/i1996-00302-7

We show that the solutions of the Yang--Baxter equation invariant under the
action of the Yangian $Y(sl_2)$ lead to inhomogenous vertex models. Starting
from a four dimensional representation of $Y(sl_2)$ we obtain an integrable
family of coupled Heisenberg spin-$1\over2$ chains. Some thermodynamical
properties of this model are studied by means of the algebraic Bethe Ansatz.

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