Four-Point Amplitude from Open Superstring Field Theory

@inproceedings{Berkovits1999FourPointAF,
  title={Four-Point Amplitude from Open Superstring Field Theory},
  author={Nathan Berkovits and Carlos Tello Echevarria},
  year={1999}
}
An open superstring field theory action has been proposed which does not suffer from contact term divergences. In this paper, we compute the on-shell four-point tree amplitude from this action using the Giddings map. After including contributions from the quartic term in the action, the resulting amplitude agrees with the first-quantized prescription. e-mail: nberkovi@ift.unesp.br e-mail: carlos@ift.unesp.br 
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