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arXiv · 1412.5281

Symmetries and Feynman Rules for Ramond Sector in Open Superstring Field Theory

Hiroshi Kunitomo
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Abstract

We examine the symmetries of the action suppelemented 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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Hiroshi Kunitomo. 2014-12-17. Symmetries and Feynman Rules for Ramond Sector in Open Superstring Field Theory. https://doi.org/10.1093/ptep%2Fptv027

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