36 citations · 133 across the 9 of their papers we have counts for
8 papers · 1 filter
Graviton particle statistics and coherent states from classical scattering amplitudes
Ruth Britto, Riccardo Gonzo, Guy R. Jehu
In the two-body scattering problem in general relativity, we study the final graviton particle distribution using a perturbative approach. We compute the mean, the variance and the…
Proving the dimension-shift conjecture
Ruth Britto, Guy R. Jehu, Andrea Orta
We prove the conjecture made by Bern, Dixon, Dunbar, and Kosower that describes a simple dimension shifting relationship between the one-loop structure of N = 4 MHV amplitudes and…
The dimension-shift conjecture for one-loop amplitudes
Ruth Britto, Guy R. Jehu, Andrea Orta
A conjecture made by Bern, Dixon, Dunbar, and Kosower asserts a simple dimension-shifting relationship between the one-loop structure of N = 4 MHV amplitudes and all-plus helicity…
Loop Amplitudes in an Extended Gravity Theory
David C. Dunbar, John H. Godwin, Guy R. Jehu +1
We extend the -matrix of gravity by the addition of the minimal three-point amplitude or equivalently adding terms to the Lagrangian. We demonstrate how Unitarity can be u…
Analytic all-plus-helicity gluon amplitudes in QCD
David C. Dunbar, John H. Godwin, Guy R. Jehu +1
We detail the calculation of two-loop all-plus helicity amplitudes for pure Yang-Mills theory. The four dimensional unitarity methods and augmented recursion techniques we have dev…
Diagrammar in an Extended Theory of Gravity
David C. Dunbar, John H. Godwin, Guy R. Jehu +1
We show how the -matrix of an extended theory of gravity defined by its three-point amplitudes can be constructed by demanding factorisation. The resultant -matrix has tree a…
Two-Loop Gravity amplitudes from four dimensional Unitarity
David C. Dunbar, Guy R. Jehu, Warren B. Perkins
We compute the polylogarithmic parts of the two-loop four and five-graviton amplitudes where the external helicities are positive and express these in a simple compact analytic for…
The two-loop n-point all-plus helicity amplitude
David C. Dunbar, Guy R. Jehu, Warren B. Perkins
We propose a compact analytic expression for the polylogarithmic part of the n-point two-loop all-plus helicity amplitude in gauge theory.