Quantum aspects of the worldsheet theory in the pure spinor formalism
| Full text | |
| Author(s): |
Berkovits, Nathan
Total Authors: 1
|
| Document type: | Journal article |
| Source: | Journal of High Energy Physics; v. N/A, n. 6, p. 26-pg., 2016-06-21. |
| Abstract | |
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: | 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 14/18634-9 - Gauge/Gravity duality |
| Grantee: | Victor de Oliveira Rivelles |
| Support Opportunities: | Research Projects - Thematic Grants |