Motivated by conceptual problems in quantum theories of gravity, the gravitational eikonal
approach, inspired by its electromagnetic predecessor, has been successfully applied to the …

We give a comprehensive review of recent developments on using the pure spinor
formalism to compute massless superstring scattering amplitudes at tree level. The main …

We survey on-shell and off-shell higher derivative supergravities in dimensions 1≤ D≤ 11.
Various approaches to their construction, including the Noether procedure,(harmonic) …

We derive local kinematic numerators for gauge theory tree amplitudes which manifestly
satisfy Jacobi identities analogous to color factors. They naturally emerge from the low …

In this paper the pure spinor formalism is used to obtain a compact expression for the
superstring N-point disk amplitude. The color-ordered string amplitude is given by a sum …

A ten-dimensional super-Poincaré covariant formalism for the superstring was recently
developed which involves a BRST operator constructed from superspace matter variables …

Turning on background fields in string theory sometimes has an alternative interpretation as
a deformation of the target space geometry. A particularly well-known case is the NS–NS …

Following suggestions of Nekrasov and Siegel, a non-minimal set of fields are added to the
pure spinor formalism for the superstring. Twisted ĉ= 3 N= 2 generators are then constructed …

In these lectures we review Generalized Complex Geometry and discuss two main
applications to string theory: the description of supersymmetric flux compactifications and the …

We study supersymmetric Wilson loop operators in ABJM theory from both sides of the
AdS4/CFT3 correspondence. We first construct some supersymmetric Wilson loops. The …