The purpose of this review is to bridge the gap between a standard course in quantum field
theory and recent fascinating developments in the studies of on-shell scattering amplitudes …

Providing a comprehensive, pedagogical introduction to scattering amplitudes in gauge
theory and gravity, this book is ideal for graduate students and researchers. It offers a …

We review aspects of twistor theory, its aims and achievements spanning the last five
decades. In the twistor approach, space–time is secondary with events being derived …

A bstract Carrollian holography aims to express gravity in four-dimensional asymptotically
flat spacetime in terms of a dual three-dimensional Carrollian CFT living at null infinity …

Higher Spin Gravity refers to extensions of gravity including at least one field of spin greater
than two. These extensions are expected to provide manageable models of quantum gravity …

A bstract The scattering of gluons and gravitons in trivial backgrounds is endowed with many
surprising infrared features which have interesting conformal interpretations on the two …

At the fundamental level, the interactions of elementary particles are described by quantum
gauge field theory. The quantitative implications of these interactions are captured by …

A bstract We consider the hexagonal Wilson loop dual to the six-point MHV amplitude in
planar\(\mathcal {N}= 4\) super Yang-Mills theory. We apply constraints from the operator …

A bstract We describe the minimal space of polylogarithmic functions that is required to
express the six-particle amplitude in planar\(\mathcal {N}\)= 4 super-Yang-Mills theory …

We use the duality between color and kinematics to simplify the construction of the complete
four-loop four-point amplitude of N= 4 super-Yang-Mills theory, including the nonplanar …