On the Compton Scattering in String Theory

TL;DR

This paper calculates the Compton scattering amplitude in a four-dimensional fermionic heterotic string model at tree level and one loop, comparing string theory results with field theory counterparts.

Contribution

It provides explicit computations of scattering amplitudes in string theory and explores their connection to field theory results.

Findings

Computed tree-level and one-loop Compton amplitudes in string theory.

Analyzed the relationship between string and field theory amplitudes.

Provided insights into string corrections to standard field theory results.

Abstract

We explicitly compute the Compton amplitude for the scattering of a photon and a (massless) ``electron/positron'' at tree level and one loop, in a four-dimensional fermionic heterotic string model. We comment on the relationship between the amplitudes we compute in string theory and the corresponding ones in field theory.