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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Untwisting the pure spinor formalism to the RNS and twistor string in a flat and AdS(5) x S-5 background

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Berkovits, Nathan
Total Authors: 1
Document type: Journal article
Source: Journal of High Energy Physics; n. 6 JUN 21 2016.
Web of Science Citations: 5

The pure spinor formalism for the superstring can be formulated as a twisted N=2 worldsheet theory with fermionic generators j(BRsT) and composite b ghost. After untwisting the formalism to an N=1 worldsheet theory with fermionic stress tensor j(BRsT) + b, the worldsheet variables combine into N=1 worldsheet superfields X-m and Theta(alpha) together with a superfield constraint relating DXm and D Theta(alpha). The constraint implies that the worldsheet superpartner of theta(alpha) is a bosonic twistor variable, and different solutions of the constraint give rise to the pure spinor or extended RNS formalisms, as well as a new twistor-string formalism with manifest N=1 worldsheet supersymmetry. These N=1 worldsheet methods generalize in curved Ramond-Ramond backgrounds, and a manifestly N=1 worldsheet supersymmetric action is proposed for the superstring in an AdS(5) x S-5 background in terms of the twistor superfields. This AdS(5) x S-5 worldsheet action is a remarkably simple fermionic coset model with manifest PSU(2, 2 vertical bar 4) symmetry and might be useful for computing AdS(5) x S-5 superstring scattering amplitudes. (AU)

FAPESP's process: 14/18634-9 - Gauge/Gravity duality
Grantee:Victor de Oliveira Rivelles
Support type: Research Projects - Thematic Grants
FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants