Date of this Version
Physical Review Letters
We show how to treat boundary divergences in heterotic string theory covariantly and unambiguously. The method applies even to theories with nonvanishing tadpoles; in this case the Fischler-Susskind mechanism sufficies to ensure well defined answers. Also n-point functions are well defined with no special string-tension renormalizations. As an example we find the loop corrections to the linearized background equations of motion for the O(16)×O(16) string needed to give unambiguous, finite scattering amplitudes. No splitting or projection of supermoduli space is needed.
La, H., & Nelson, P. C. (1989). Unambiguous Fermionic String Amplitudes. Physical Review Letters, 63 (1), 24-27. http://dx.doi.org/10.1103/PhysRevLett.63.24
Date Posted: 01 May 2017
This document has been peer reviewed.