2000 character limit reached
A relation between massive and massless string tree amplitudes (2311.12100v1)
Published 20 Nov 2023 in hep-th
Abstract: We uncover a relation between the scattering amplitudes of massive strings and the $\alpha'$ expansion of the massless string amplitude at tree level. More precisely, the n-point tree amplitude of n-1 massless and one massive state is written as a linear combination of n+1 massless string amplitudes at the $\alpha'2$ order.