2000 character limit reached
Subleading Soft Factor for String Disk Amplitudes (1406.4172v2)
Published 16 Jun 2014 in hep-th
Abstract: We investigate the behavior of superstring disk scattering amplitudes in the presence of a soft external momentum at finite string tension. We prove that there are no $\alpha'$-corrections to the field theory form of the subleading soft factor $S{(1)}$. At the end of this work, we also comment on the possibility to find the corresponding subleading soft factors in closed string theory using our result and the KLT relations.