The non-minimal type II pure spinor string in a curved background

Abstract

The pure spinor superstring in a type II curved background is considered. In order to define reparametrization ghosts, non-minimal pure spinor variables have to be present in the formalism. The BRST transformations of the non-minimal variables are obtained. It is found that the BRST transformations of a set of world-sheet variables have the form of the corresponding transformations in flat spacetime, up to a field-dependent Lorentz rotation. This simplify the construction of the reparametrization $b$ ghosts.

14 pages, harvmac big. Improved text. References added

References in corpus (2)

• Superstring Scattering Amplitudes with the Pure Spinor Formalism
• A Note on the Classical BRST Symmetry of the Pure Spinor String in a Curved Background