Journal Article Symmetries and Feynman rules for the Ramond sector in open superstring field theory

Kunitomo, H.

2015 ( 3 ) 2015-03-21 , Oxford University Press
We examine the symmetries of the action supplemented by the constraint in the WZW-type open superstring field theory. It is found that this pseudo-action has additional symmetries provided we impose the constraint after the transformation. Respecting these additional symmetries, we propose a prescription for the new Feynman rules for the Ramond sector. It is shown that the new rules reproduce the well-known on-shell four- and five-point amplitudes with external fermions.

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