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

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.

30 pages, 13 figures; v2 a small explanation is added; v3 minor corrections

References in corpus (4)

• Off-shell Amplitudes in Superstring Theory
• Open superstring field theory I: gauge fixing, ghost structure, and propagator
• The Ramond Sector of Heterotic String Field Theory
• First-Order Equations of Motion for Heterotic String Field Theory

Cited by in corpus (9)

• Cutkosky Rules for Superstring Field Theory
• Closed Superstring Field Theory and its Applications
• BV Master Action for Heterotic and Type II String Field Theories
• Complete action for open superstring field theory
• Ramond Equations of Motion in Superstring Field Theory
• On-shell equivalence of two formulations for superstring field theory
• Fermion scattering amplitudes from gauge-invariant actions for open superstring field theory
• Symmetries and Feynman Rules for Ramond Sector in Heterotic String Field Theory
• Relation between the Reducibility Structures and between the Master Actions in the Witten Formulation and the Berkovits Formulation of Open Superstring Field Theory