Particle-Field Duality and Form Factors from Vertex Operators

Details Particle-Field Duality and Form Factors from Vertex Operators Particle-Field Duality and Form Factors from Vertex Operators

1993-12-14

arxiv.org/abs/hep-th/9312121v1

Commun.Math.Phys. 171 (1995) 531-546

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 2 figures, CLNS 93/???

Scientific paper

Using a duality between the space of particles and the space of fields, we show how one can compute form factors directly in the space of fields. This introduces the notion of vertex operators, and form factors are vacuum expectation values of such vertex operators in the space of fields. The vertex operators can be constructed explicitly in radial quantization. Furthermore, these vertex operators can be exactly bosonized in momentum space. We develop these ideas by studying the free-fermion point of the sine-Gordon theory, and use this scheme to compute some form-factors of some non-free fields in the sine-Gordon theory. This work further clarifies earlier work of one of the authors, and extends it to include the periodic sector.

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