Addendum to: ``Symmetries of the Bosonic String S-Matrix,''

TL;DR

This paper extends previous work by proving that the bracket relations uniquely determine the tree-level bosonic string S-matrix for any number of particles, broadening the scope from earlier limited cases.

Contribution

It generalizes the previous proof to include all N-particle scattering processes, not just N≤26, confirming the uniqueness of the S-matrix in a broader context.

Findings

Bracket relations uniquely fix the S-matrix for all N

Extension from N≤26 to all N in bosonic string theory

Supports the consistency of string scattering amplitudes

Abstract

In a previous paper we showed that bracket relations uniquely fix the tree-level bosonic string $S$-matrix for $N\leq 26$ particle scattering. In this note we extend the proof to $N$-particle scattering for all $N$.