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arXiv · hep-th/0405044

A recursion formula for the correlation functions of an inhomogeneous XXX model

H. Boos·M. Jimbo·T. Miwa·F. Smirnov·Y. Takeyama
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Abstract

A new recursion formula is presented for the correlation functions of the integrable spin 1/2 XXX chain with inhomogeneity. It relates the correlators involving n consecutive lattice sites to those with n-1 and n-2 sites. In a series of papers by V. Korepin and two of the present authors, it was discovered that the correlators have a certain specific structure as functions of the inhomogeneity parameters. Our formula allows for a direct proof of this structure, as well as an exact description of the rational functions which has been left undetermined in the previous works.

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H. Boos, M. Jimbo, T. Miwa, F. Smirnov, Y. Takeyama. 2004-06-29. A recursion formula for the correlation functions of an inhomogeneous XXX model. https://arxiv.org/abs/hep-th/0405044

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