The Ten-Dimensional Green-Schwarz Superstring is a Twisted Neveu-Schwarz-Ramond String

Abstract

An action for the ten-dimensional Green-Schwarz superstring with N=2 worldsheet superconformal invariance has recently been used to calculate superstring scattering amplitudes and prove their finiteness. In this paper, it is shown that the N=2 stress-energy tensor for this Green-Schwarz action can be constructed out of the stress-energy tensor and ghosts of the Neveu- Schwarz-Ramond action by the standard twisting procedure. In other words, a field redefinition is found from the GS matter fields into the NSR matter and ghost fields which transforms the matter part of the two fermionic GS super- conformal generators into the $b$ ghost and shifted BRST current of the NSR string. In light-cone gauge, this field redefinition reduces to the usual one relating the light-cone GS and NSR fields. Although this proves the equivalence of physical vertex operators in the two superstring formalisms, multiloop amplitudes are easier to calculate using the Green-Schwarz formalism since manifest spacetime supersymmetry eliminates the need for spin cuts, GSO projections, and cutoffs in moduli space.

6 pages plain Tex, KCL-TH-12

References in corpus (3)

• The Heterotic Green-Schwarz Superstring on an N=(2,0) Super-Worldsheet
• Calculation of Green-Schwarz Superstring Amplitudes Using the N=2 Twistor-String Formalism
• Finiteness and Unitarity of Lorentz-Covariant Green-Schwarz Superstring Amplitudes

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