Exact two-particle Matrix Elements in S-Matrix Preserving Deformation of Integrable QFTs

Details Exact two-particle Matrix Elements in S-Matrix Preserving Deformation of Integrable QFTs Exact two-particle Matrix Elements in S-Matrix Preserving Deformation of Integrable QFTs

1998-12-14

arxiv.org/abs/hep-th/9812106v1

Phys.Lett. B448 (1999) 227-233

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, Latex, no figures

Scientific paper

10.1016/S0370-2693(99)00055-6

In a recent paper it was shown that the response of an integrable QFT under variation of the Unruh temperature can be computed from a S-matrix preserving deformation of the form factor approach. We give explicit expressions for the deformed two-particle formfactors for various integrable models: The Sine-Gordon and SU(2) Thirring model, several perturbed minimal CFTs and the real coupling affine Toda series. A uniform pattern is found to emerge when both the S-matrix and the deformed form factors are expressed in terms Barnes' multi-periodic functions.

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