Finite-Volume Form Factors in Semiclassical Approximation

Details Finite-Volume Form Factors in Semiclassical Approximation Finite-Volume Form Factors in Semiclassical Approximation

2003-07-14

arxiv.org/abs/hep-th/0307125v1

Nucl.Phys. B670 (2003) 464-478

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, latex, 1 figure

Scientific paper

10.1016/j.nuclphysb.2003.08.017

A semiclassical approach is used to obtain Lorentz covariant expressions for the form factors between the kink states of a quantum field theory with degenerate vacua. Implemented on a cylinder geometry it provides an estimate of the spectral representation of correlation functions in a finite volume. Illustrative examples of the applicability of the method are provided by the Sine-Gordon and the broken \phi^4 theories in 1+1 dimensions.

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