This review describes the duality between color and kinematics and its applications, with the
aim of gaining a deeper understanding of the perturbative structure of gauge and gravity …

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 short, graduate-level synthesis of recent developments in theoretical physics, from a
pioneer in the field Lectures on the Infrared Structure of Gravity and Gauge Theory presents …

Advances in scattering amplitudes have exposed previously-hidden color-kinematics and
double-copy structures in theories ranging from gauge and gravity theories to effective field …

A bstract Recent years have seen the emergence of a new understanding of scattering
amplitudes in the simplest theory of colored scalar particles—the Tr (ϕ 3) theory—based on …

We use the recently developed generalized double-copy construction to obtain an improved
representation of the five-loop four-point integrand of N= 8 supergravity whose leading …

A bstract We systematically explore the space of scalar effective field theories (EFTs)
consistent with a Lorentz invariant and local S-matrix. To do so we define an EFT …

A bstract We explore the logarithmic terms in the soft theorem in four dimensions by
analyzing classical scattering with generic incoming and outgoing states and one loop …

These lectures are a brief introduction to scattering amplitudes. We begin with a review of
basic kinematical concepts like the spinor helicity formalism, followed by a tutorial on …

This thesis proposes a new perspective on scattering amplitudes in quantum field theories.
Their standard formulation in terms of sums over Feynman diagrams is replaced by a …