BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Untwisting the pure spinor formalism - Nathan Berkovits (ICTP-SAIF
 R/IFT-UNESP\, Sao Paulo)
DTSTART:20160701T090000Z
DTEND:20160701T100000Z
UID:TALK66638@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:The pure spinor formalism for the superstring &nbsp\;is a twis
 ted N=2 superconformal field theory where the BRST current and the b ghost
  are the two fermionic generators. After untwisting this N=2 superconforma
 l field theory and defining the N=1 superconformal generator&nbsp\;G = j_{
 BRST} + b\, the pure spinor formalism can be described with manifest N=1 w
 orldsheet supersymmetry. This N=1 supersymmetric description is useful for
  comparing with the RNS formalism and for constructing worldsheet supersym
 metric sigma models for Ramond-Ramond backgrounds such as AdS_5xS^5.
LOCATION:Seminar Room 1\, Newton Institute
END:VEVENT
END:VCALENDAR