# Regularization of multi-soliton form factors in sine-Gordon model

## Description

Abstract A general and systematic regularization is developed for the exact solitonic form factors of exponential operators in the ( 1 + 1 )-dimensional sine-Gordon model by analytical continuation of their integral representations. The procedure is implemented in Mathematica. Test results are shown for four- and six-soliton form factors. Title of program: SGFF Catalogue Id: AEMG_v1_0 Nature of problem The multi-soliton form factors of the sine-Gordon model (relevant in two dimensional physics) were given only by highly nontrivial integral representation with a limited domain of convergence. Practical applications of the form factors, e.g. calculation of correlation functions in two dimensional condensed matter systems, were not possible in general. Versions of this program held in the CPC repository in Mendeley Data AEMG_v1_0; SGFF; 10.1016/j.cpc.2012.03.011 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)