NEW INTEGRABLE DEFORMATIONS OF HIGHER SPIN HEISENBERG-ISING CHAINS

被引：9

作者：

GOMEZ, C ^{[1
]}

SIERRA, G ^{[1
]}

机构：

[1] CSIC,INST FIS FUNDAMENTAL,MADRID 6,SPAIN

来源：

PHYSICS LETTERS B | 1992年 / 285卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)91310-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show that the anisotropic Heisenberg-Ising chains with higher spin allow, for special values of the anisotropy, integrable deformations intimately related to the theory of quantum groups at roots of unity. For the spin-one case we construct and study the symmetries of the hamiltonian which depends on a spectral variable belonging to an elliptic curve. One of the points of this curve yields the Fateev-Zamolodchikov hamiltonian of spin-one and anisotropy DELTA=1/2 (q2+q-2) with q a cubic root of unity. In some other special points the spin degrees of freedom as well as the hamiltonian splits into pieces governed by a larger symmetry.

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页码：126 / 132

页数：7

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