246 citations · 1.9k across the 48 of their papers we have counts for
49 papers
Self-Dual Fields on Self-Dual Backgrounds and the Double Copy
Graham R. Brown, Joshua Gowdy, Bill Spence
We explore the double copy for self-dual gauge and gravitational fields on self-dual background spacetimes. We consider backgrounds associated to solutions of the second Plebanski…
Celestial Twistor Amplitudes
Graham R. Brown, Joshua Gowdy, Bill Spence
We show how to formulate celestial twistor amplitudes in Yang-Mills (YM) and gravity. This is motivated by a refined holographic correspondence between the twistor transform and th…
Celestial Superamplitudes
Andreas Brandhuber, Graham R. Brown, Joshua Gowdy +2
We study celestial amplitudes in (super) Yang-Mills theory using a parameterisation of the spinor helicity variables where their overall phase is not fixed by the little group acti…
Weyl doubling
Rashid Alawadhi, David S. Berman, Bill Spence
We study a host of spacetimes where the Weyl curvature may be expressed algebraically in terms of an Abelian field strength. These include Type D spacetimes in four and higher dime…
S-duality and the Double Copy
Rashid Alawadhi, David S. Berman, Bill Spence +1
The double copy formalism provides an intriguing connection between gauge theories and gravity. It was first demonstrated in the perturbative context of scattering amplitudes but r…
The connected prescription for form factors in twistor space
Andreas Brandhuber, Edward Hughes, Rodolfo Panerai +2
We propose a connected prescription formula in twistor space for all tree-level form factors of the stress tensor multiplet operator in super Yang-Mills, which is a…