On the Evaluation of Compton Scattering Amplitudes in String Theory
arXiv:hep-th/9710237 · doi:10.1142/S0217751X98002237
Abstract
We consider the Compton amplitude for the scattering of a photon and a (massless) ``electron/positron'' at one loop (i.e. genus one) in a four-dimensional fermionic heterotic string model. Starting from the bosonization of the world-sheet fermions needed to explicitly construct the spin-fields representing the space-time fermions, we present all the steps of the computation which leads to the explicit form of the amplitude as an integral of modular forms over the moduli space.
41 pages, Latex
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