45 research outputs found
Worldsheet dilatation operator for the superstring
In this work we propose a systematic way to compute the logarithmic
divergences of composite operators in the pure spinor description of the
superstring. The computations of these divergences can be
summarized in terms of a dilatation operator acting on the local operators. We
check our results with some important composite operators of the formalism.Comment: 35 page
Supertwistor description of the pure spinor string
We describe the pure spinor string in the using
unconstrained matrices first used by Roiban and Siegel for the Green-Schwarz
superstring.Comment: 20 page
Consistency of Super-Poincare Covariant Superstring Tree Amplitudes
Using pure spinors, the superstring was recently quantized in a manifestly
ten-dimensional super-Poincar\'e covariant manner and a covariant prescription
was given for tree-level scattering amplitudes. In this paper, we prove that
this prescription is cyclically symmetric and, for the scattering of an
arbitrary number of massless bosons and up to four massless fermions, it agrees
with the standard Ramond-Neveu-Schwarz prescription.Comment: 12 pages harvmac (large
AdS pure spinor superstring in constant backgrounds
In this paper we study the pure spinor formulation of the superstring in
around point particle solutions of the classical equations of
motion. As a particular example we quantize the pure spinor string in the BMN
background.Comment: 17 pages. Typos corrected. References adde
Master symmetry in the pure spinor string
We lift the set of classical non-local symmetries recently studied by Klose,
Loebbert, and M\"unkler in the context of cosets to the pure
spinor description of the superstring in the background.Comment: 16 page