On the universal R-matrix for the Izergin-Korepin model

Details On the universal R-matrix for the Izergin-Korepin model On the universal R-matrix for the Izergin-Korepin model

2011-04-29

arxiv.org/abs/1104.5696v2

J.Phys.A44:355202,2011

Physics

Mathematical Physics

26 pages; comments and refs added, version to appear in J. Phys. A: Math. Theor

Scientific paper

10.1088/1751-8113/44/35/355202

We continue our exercises with the universal $R$-matrix based on the Khoroshkin and Tolstoy formula. Here we present our results for the case of the twisted affine Kac--Moody Lie algebra of type $A^{(2)}_2$. Our interest in this case is inspired by the fact that the Tzitz\'eica equation is associated with $A^{(2)}_2$ in a similar way as the sine-Gordon equation is related to $A^{(1)}_1$. The fundamental spin-chain Hamiltonian is constructed systematically as the logarithmic derivative of the transfer matrix. $L$-operators of two types are obtained by using q-deformed oscillators.

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