A simpler prescription for MHV graviton tree amplitudes in superstring theory

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Data

2013-11-05

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Springer

Resumo

We extend the Berkovits-Maldacena prescription for MHV amplitudes of the open superstring to the closed superstring, showing that in the alpha'aEuro parts per thousand= 0 limit it reduces to the result of supergravity found recently by Hodges. We also verify that this prescription calculates the correct superstring tree level MHV amplitude for 4 gravitons including alpha' corrections.

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Scattering Amplitudes, Superstrings and Heterotic Strings, Extended Supersymmetry

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Journal Of High Energy Physics. New York: Springer, n. 11, 26 p., 2013.