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arXiv · hep-th/9707091

Angular quantization and form-factors in massive integrable models

V. Brazhnikov·S. Lukyanov
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Abstract

We discuss an application of the method of the angular quantization to reconstruction of form-factors of local fields in massive integrable models. The general formalism is illustrated with examples of the Klein-Gordon, sinh-Gordon and Bullough-Dodd models. For the latter two models the angular quantization approach makes it possible to obtain free field representations for form-factors of exponential operators. We discuss an intriguing relation between the free field representations and deformations of the Virasoro algebra. The deformation associated with the Bullough-Dodd models appears to be different from the known deformed Virasoro algebra.

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V. Brazhnikov, S. Lukyanov. 1997-07-09. Angular quantization and form-factors in massive integrable models. https://doi.org/10.1016/s0550-3213(97)00713-x

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