A covariant map between the Ramond-Neveu-Schwarz (RNS) and pure spinor formalisms for the superstring is found which transforms the RNS and pure spinor BRST operators into each other. The key ingredient is a dynamical twisting of the ten spin-half RNS fermions into five spin-one and five spin-zero fermions using bosonic pure spinors that parameterize an SO(10)/U(5) coset. The map relates massless vertex operators in the two formalisms, and gives a new description of Ramond states which does not require spin fields. An argument is proposed for relating the amplitude prescriptions in the two formalisms. © 2014 The Author(s).
CITATION STYLE
Berkovits, N. (2014). Covariant map between Ramond-Neveu-Schwarz and pure spinor formalisms for the superstring. Journal of High Energy Physics, 2014(4). https://doi.org/10.1007/JHEP04(2014)024
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