Symmetries of the Bosonic String SMatrix
Abstract
The bracket operation on mutually local BRST classes may be combined with Lorentz invariance and analyticity to write an infinite set of finite difference relations on string scattering amplitudes. When combined with some simple physical criteria these relations uniquely determine the genus zero string $S$matrix for $N\leq 26$particle scattering in $\IR^{25,1}$ in terms of a single parameter, $\kappa$, the string coupling. We propose that the highenergy limit of the relations are the Ward identities for the highenergy symmetries of string theory.
 Publication:

arXiv eprints
 Pub Date:
 October 1993
 arXiv:
 arXiv:hepth/9310026
 Bibcode:
 1993hep.th...10026M
 Keywords:

 High Energy Physics  Theory
 EPrint:
 37pp.,YCTPP1993. (Important revision: An error has been fixed and the conclusions altered. The analysis only applies in a straightforward way to $N$particle scattering for $N\leq 26$.)