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 …

A formalism is provided to calculate tree amplitudes in open superstring theory for any
multiplicity at any order in the inverse string tension. We point out that the underlying world …

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 …

This report is centred around tree-level scattering amplitudes in pure Yang–Mills theories,
the most prominent example is given by the tree-level gluon amplitudes of QCD. I will …

A bstract We present a recursive method to calculate the α′-expansion of disk integrals
arising in tree-level scattering of open strings which resembles the approach of Berends and …

A bstract We find simple expressions for the kinematic numerators of one-loop MHV
amplitudes in maximally supersymmetric Yang-Mills theory and supergravity, at any …

A bstract Previous work has shown that massless tree amplitudes of the type I and IIA/B
superstrings can be dramatically simplified by expressing them as double copies between …

A bstract Mason and Skinner recently constructed a chiral infinite tension limit of the
Ramond-Neveu-Schwarz superstring which was shown to compute the Cachazo-He-Yuan …

We explain a procedure to manifest the Bern–Carrasco–Johansson duality between color
and kinematics in n-point one-loop amplitudes of a variety of supersymmetric gauge …