Quantum MHV Diagrams

TL;DR

This paper reviews the quantum MHV diagram method, an on-shell technique that advances the calculation of one-loop scattering amplitudes in gauge theories, highlighting recent developments and applications.

Contribution

It introduces and discusses the quantum MHV diagram approach for calculating one-loop amplitudes, expanding on on-shell techniques in gauge theory.

Findings

Quantum MHV diagrams facilitate efficient one-loop amplitude calculations.

Application of D-dimensional unitarity extends methods to non-supersymmetric Yang-Mills.

On-shell techniques deepen understanding of gauge theory scattering processes.

Abstract

Over the past two years, the use of on-shell techniques has deepened our understanding of the S-matrix of gauge theories and led to the calculation of many new scattering amplitudes. In these notes we review a particular on-shell method developed recently, the quantum MHV diagrams, and discuss applications to one-loop amplitudes. Furthermore, we briefly discuss the application of D-dimensional generalised unitarity to the calculation of scattering amplitudes in non-supersymmetric Yang-Mills.