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Operator-valued Riemann-Hilbert problem for correlation functions of the XXZ spin chain

Yasuhiro Fujii·Miki Wadati
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Abstract

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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Yasuhiro Fujii, Miki Wadati. 1999-12-16. Operator-valued Riemann-Hilbert problem for correlation functions of the XXZ spin chain. https://doi.org/10.1088/0305-4470%2F33%2F7%2F305

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