Abstract
The purpose of the “bootstrap program” for integrable quantum field theories in 1+1 dimensions is to construct a model explicitly in terms of its Wightman functions. We illustrate this program here mainly in terms of the SU(N) Gross-Neveu model. We construct the nested off-shell Bethe ansatz for an SU(N) factoring S-matrix and consider the problem of how to sum over intermediate states in the short-distance limit of the two-point Wightman function for the sinh-Gordon model.
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Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 155, No. 1, pp. 13–24, April, 2008.
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Babujian, H.M., Foerster, A. & Karowski, M. The form factor program: A review and new results, the nested SU(N) off-shell Bethe ansatz and the 1/N expansion. Theor Math Phys 155, 512–522 (2008). https://doi.org/10.1007/s11232-008-0042-7
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DOI: https://doi.org/10.1007/s11232-008-0042-7