105 citations · 162 across the 10 of their papers we have counts for
12 papers
The classical limit of the Magnus expansion
Andreas Brandhuber, Graham R. Brown, Sebastien MacDonald +3
We uncover a connection between the classical limit of the Magnus expansion in quantum field theory and the Malvenuto-Reutenauer Hopf algebra of permutations. We study a cubic scal…
single-minus superamplitudes and dual superconformal symmetry
Andreas Brandhuber, Paolo Pichini, Gabriele Travaglini +1
We construct the supersymmetric completion of the recently proposed single-minus gluon amplitudes in signature, which are nonvanishing for all multiplicitie…
The Magnus expansion in relativistic quantum field theory
Andreas Brandhuber, Graham R. Brown, Paolo Pichini +2
We investigate the Magnus expansion of the -operator in relativistic quantum field theory, which is related to the -matrix via . We develop direct methods to comp…
Searching for Kerr in string amplitudes
Francesco Alessio, Paolo Di Vecchia, Maurizio Firrotta +1
We continue the approach of [1] to attempt to reproduce the classical electromagnetic current of the solution from the infinite-spin limit of a three-point a…
Binary Kerr black-hole scattering at 2PM from quantum higher-spin Compton
Lara Bohnenblust, Lucile Cangemi, Henrik Johansson +1
Quantum higher-spin theory applied to Compton amplitudes has proven to be surprisingly useful for elucidating Kerr black hole dynamics. Here we apply the framework to compute scatt…
Spinning binary dynamics in cubic effective field theories of gravity
Andreas Brandhuber, Graham R. Brown, Paolo Pichini +2
We study the binary dynamics of two Kerr black holes with arbitrary spin vectors in the presence of parity-even and parity-odd cubic deformations of gravity. We first derive the tr…
Compton Amplitude for Rotating Black Hole from QFT
Lucile Cangemi, Marco Chiodaroli, Henrik Johansson +3
We construct a candidate tree-level gravitational Compton amplitude for a rotating Kerr black hole, for any quantum spin s=0,1/2,1,...,, from which we extract the correspon…
From higher-spin gauge interactions to Compton amplitudes for root-Kerr
Lucile Cangemi, Marco Chiodaroli, Henrik Johansson +3
We develop massive higher-spin theory as a framework for describing dynamics of rotating compact objects, such as Kerr black holes. In this paper, we explore gauge interactions up…
Kerr Black Holes From Massive Higher-Spin Gauge Symmetry
Lucile Cangemi, Marco Chiodaroli, Henrik Johansson +3
We propose that the dynamics of Kerr black holes is strongly constrained by the principle of gauge symmetry. We initiate the construction of EFTs for Kerr black holes of any intege…
Classical Limit of Higher-Spin String Amplitudes
Lucile Cangemi, Paolo Pichini
It has been shown that a special set of three-point amplitudes between two massive spinning states and a graviton reproduces the linearised stress-energy tensor for a Kerr black ho…
Double parton distributions out of bounds in colour space
Markus Diehl, Jonathan R. Gaunt, Peter Plossl +1
We investigate the positivity of double parton distributions with a non-trivial dependence on the parton colour. It turns out that positivity is not preserved by leading-order evol…
Compton Black-Hole Scattering for
Marco Chiodaroli, Henrik Johansson, Paolo Pichini
Quantum scattering amplitudes for massive matter have received new attention in connection to classical calculations relevant to gravitational-wave physics. Amplitude methods and i…