Consistent Off-Shell Tree String Amplitudes
High Energy Physics - Theory
2009-10-31 v2
Abstract
We give a construction of off-shell tree bosonic string amplitudes, based on the operatorial formalism of the -string Vertex, with three external massless states both for open and closed strings by requiring their being projective invariant. In particular our prescription leads, in the low-energy limit, to the three-gluon amplitude in the usual covariant gauge.
Cite
@article{arxiv.hep-th/9903027,
title = {Consistent Off-Shell Tree String Amplitudes},
author = {A. Liccardo and F. Pezzella and R. Marotta},
journal= {arXiv preprint arXiv:hep-th/9903027},
year = {2009}
}
Comments
12 pages. Introductory and final parts modified in order to make them more clear. Cosmetic changes in formulae (13) and (14). Some misprints corrected