Amplitudes for black holes
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Date
07/08/2023Author
Sergola, Matteo
Metadata
Abstract
In recent years the double copy has provided a bridge between scattering
amplitudes and gravitational interactions, allowing physicists to perform computations
once unthinkable. Its strength relies on borrowing perturbative (much
easier) results from gauge theories, and extracting classical results from quantum
amplitudes. Recently, the gravitational two-body problem, central for the
blooming field of gravitational wave physics, is being scrutinized under the
light of such duality. In this thesis we work towards understanding how the
double copy can help us compute classical gravity observables through the socalled
“KMOC formalism”. This is a framework that has already received great
interest from both the gravitational waves and the amplitude community, since it
focuses directly on the computation of physical observables (for instance, without
resorting to a Hamiltonian) allowing for a deeper understanding of underlying
structures present in the classical limit of amplitudes.