As particle physicists, we are familiar with gauge theory, which is based on exact symmetries usually described by compact groups. As...

The concept of symmetry has been generalized in the past decade, and how to utilize these powerful tools is still under exploration....

The {\it double copy} is a remarkable relationship between our theories of particle physics --- gauge theories --- and our theory of...

Pulsars, discovered in 1967, are highly magnetized rotating compact stars that emit beams of electromagnetic radiation from their...