Strings from Massive Higher Spins: The Asymptotic Uniqueness of the Veneziano Amplitude

Understand

We consider weakly-coupled theories of massive higher-spin particles.

• This class of models includes, for instance, tree-level String Theory and Large-N Yang-Mills theory.
• The S-matrix in such theories is a meromorphic function obeying unitarity and crossing symmetry.
• We discuss the (unphysical) regime $s,t \gg 1$, in which we expect the amplitude to be universal and exponentially large.