Finite-Volume Form Factors in Semiclassical Approximation
High Energy Physics - Theory
2010-04-05 v1 Condensed Matter
Mathematical Physics
math.MP
Abstract
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.
Keywords
Cite
@article{arxiv.hep-th/0307125,
title = {Finite-Volume Form Factors in Semiclassical Approximation},
author = {G. Mussardo and V. Riva and G. Sotkov},
journal= {arXiv preprint arXiv:hep-th/0307125},
year = {2010}
}
Comments
17 pages, latex, 1 figure