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Classical physics from amplitudes on curved backgrounds
- Source :
- Journal of High Energy Physics, Vol 2022, Iss 8, Pp 1-17 (2022)
- Publication Year :
- 2022
- Publisher :
- SpringerOpen, 2022.
-
Abstract
- 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 in terms of scattering amplitudes on that background. Two-point amplitudes in this framework correspond to conservative physics with background-dependent memory effects. As an application, we consider plane wave and shock wave backgrounds both in electromagnetism and general relativity. We determine the final semiclassical state, showing it satisfies a notion of double copy on curved backgrounds. We then conclude by computing the impulse of a particle on such backgrounds, deriving exact results and velocity memory effects.
Details
- Language :
- English
- ISSN :
- 10298479
- Volume :
- 2022
- Issue :
- 8
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.5577e73c053f40818445a567b1368ca2
- Document Type :
- article
- Full Text :
- https://doi.org/10.1007/JHEP08(2022)281