Zobrazeno 1 - 10
of 129
pro vyhledávání: '"Anton Ilderton"'
Autor:
Anton Ilderton, William Lindved
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-26 (2024)
Abstract Double copy relates scattering amplitudes in a web of gravitational and gauge theories. Although it has seen great success when applied to amplitudes in vacuum, far less is known about double copy in arbitrary gravitational and gauge backgro
Externí odkaz:
https://doaj.org/article/58c904e47f314c76951063874dedfc1a
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 9, Pp 1-28 (2024)
Abstract We use the worldline formalism to derive Bern-Kosower type Master Formulae for the tree-level scattering of a charged particle and an arbitrary number of photons on impulsive PP-waves, where the coupling of the PP-wave to matter is treated f
Externí odkaz:
https://doaj.org/article/e4887c1c388d428cb4acb3a4ca7b9e99
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-54 (2024)
Abstract With the aim of computing bound waveforms from scattering amplitudes, we explore gravitational two-body dynamics using the Schwinger-Dyson equations and Bethe-Salpeter recursion. We show that the tree-level scattering waveform admits a natur
Externí odkaz:
https://doaj.org/article/c0459db4237b4bf4a887ecb6836e8a55
Autor:
Anton Ilderton, William Lindved
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 12, Pp 1-29 (2023)
Abstract We consider the scattering of charged particles on particular electromagnetic fields which have properties analogous to gravitational horizons. Classically, particles become causally excluded from regions of spacetime beyond a null surface w
Externí odkaz:
https://doaj.org/article/f75519d52d3c4aa98a08de17edf92cbb
Autor:
Riccardo Gonzo, Anton Ilderton
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-42 (2023)
Abstract We study the space and properties of global and local observables for radiation emitted in the scattering of a massive scalar field in gauge and gravitational plane-wave backgrounds, in both the quantum and classical theory. We first compute
Externí odkaz:
https://doaj.org/article/bd6036a82655477eab2f78b7747526d8
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 6, Pp 1-41 (2023)
Abstract We show that large gauge transformations modify the structure of momentum conservation leading to non-vanishing three-point amplitudes in a simple toy model of a gravitational wave event. This phenomenon resolves an apparent tension between
Externí odkaz:
https://doaj.org/article/5004bc7d864b4ec28ab845111c09f0ff
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-17 (2022)
Abstract We generalise the Kosower-Maybee-O’Connell (KMOC) formalism relating classical observables and scattering amplitudes to curved backgrounds. We show how to compute the final semiclassical state for a particle moving in a curved background i
Externí odkaz:
https://doaj.org/article/5577e73c053f40818445a567b1368ca2
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-32 (2021)
Abstract For scattering amplitudes in strong background fields, it is — at least in principle — possible to perturbatively expand the background to obtain higher-point vacuum amplitudes. In the case of self-dual plane wave backgrounds we consider
Externí odkaz:
https://doaj.org/article/e5c22c8b4fef47f7b782bc2ef73aae76
Autor:
Tim Adamo, Anton Ilderton
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 9, Pp 1-34 (2020)
Abstract We consider radiation emitted by colour-charged and massive particles crossing strong plane wave backgrounds in gauge theory and gravity. These backgrounds are treated exactly and non-perturbatively throughout. We compute the back-reaction o
Externí odkaz:
https://doaj.org/article/9b6c59560635438a9f613e6e00541f7f
Autor:
Anton Ilderton, Alexander J. MacLeod
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 4, Pp 1-24 (2020)
Abstract Gauge invariance and soft limits can be enough to determine the analytic structure of scattering amplitudes in certain theories. This prompts the question of how gauge invariance is connected to analytic structure in more general theories. H
Externí odkaz:
https://doaj.org/article/c36d6d2df1bc44fdb69142693d7ed26b