THE 10-DIMENSIONAL GREEN-SCHWARZ SUPERSTRING IS A TWISTED NEVEU-SCHWARZ-RAMOND STRING

An action for the ten-dimensional Green-Schwarz superstring with N = 2 world-sheet superconformal invariance has recently been quantized and used to calculate superstring scattering amplitudes. 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 superconformal 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.