Form factors for integrable lagrangian field theories, the sinhGordon model
Abstract
Using Watson's and the recursive equations satisfied by matrix elements of local operators in twodimensional integrable models, we compute the form factors of the elementary field φ( x) and the stressenergy tensor T_{μν}( x) of sinhGordon theory. Form factors of operators with higher spin or with different asymptotic behaviour can easily be deduced from them. The value of the correlation functions are saturated by the form factors with lowest number of particle terms. This is illustrated by an application of the form factors of the trace of T_{μν}( x) to the sum rule of the ctheorem.
 Publication:

Nuclear Physics B
 Pub Date:
 March 1993
 DOI:
 10.1016/05503213(93)90252K
 arXiv:
 arXiv:hepth/9211053
 Bibcode:
 1993NuPhB.393..413F
 Keywords:

 High Energy Physics  Theory
 EPrint:
 40 pages