Operator-valued Riemann-Hilbert problem for correlation functions of the XXZ spin chain
Yasuhiro Fujii; Miki Wadati; Yasuhiro Fujii; Department of Physics, Graduate School of Science, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan; Miki Wadati; Department of Physics, Graduate School of Science, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
Журнал:
Journal of Physics A: Mathematical and General
Дата:
2000-02-25
Аннотация:
The generating functional of correlation functions for the XXZ spin chain is considered in the thermodynamic limit. We derive a system of integro-difference equations that prescribe this functional. On the basis of this system we establish the operator-valued Riemann-Hilbert problem for correlation functions of the XXZ spin chain.
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