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Simpler Superstring Scattering

Kiyoung Lee, Warren Siegel

hep-tharXiv:hep-th/0603218

Abstract

We give a new, manifestly spacetime-supersymmetric method for calculating superstring scattering amplitudes, using the ghost pyramid, that is simpler than all other known methods. No pictures nor non-vertex insertions are required other than the usual b and c ghosts of the bosonic string. We evaluate some tree and loop amplitudes as examples.

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