Amplitudes, observables, and classical scattering

Abstract We present a formalism for computing classically measurable quantities directly from on-shell quantum scattering amplitudes. We discuss the ingredients needed for obtaining the classical result, and show how to set up the calculation to derive the result efficiently. We do this without spec...

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Main Authors: David A. Kosower, Ben Maybee, Donal O’Connell
Format: Article
Language:English
Published: SpringerOpen 2019-02-01
Series:Journal of High Energy Physics
Subjects:
Online Access:http://link.springer.com/article/10.1007/JHEP02(2019)137
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author David A. Kosower
Ben Maybee
Donal O’Connell
author_facet David A. Kosower
Ben Maybee
Donal O’Connell
author_sort David A. Kosower
collection DOAJ
description Abstract We present a formalism for computing classically measurable quantities directly from on-shell quantum scattering amplitudes. We discuss the ingredients needed for obtaining the classical result, and show how to set up the calculation to derive the result efficiently. We do this without specializing to a specific theory. We study in detail two examples in electrodynamics: the momentum transfer in spinless scattering to next-to-leading order, and the momentum radiated to leading order.
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spelling doaj.art-78728ca573cf4b66a1589178e755878a2022-12-22T01:48:20ZengSpringerOpenJournal of High Energy Physics1029-84792019-02-012019216910.1007/JHEP02(2019)137Amplitudes, observables, and classical scatteringDavid A. Kosower0Ben Maybee1Donal O’Connell2Institut de Physique Théorique, CEA, CNRS, Université Paris-SaclayHiggs Centre for Theoretical Physics, School of Physics and Astronomy, The University of EdinburghHiggs Centre for Theoretical Physics, School of Physics and Astronomy, The University of EdinburghAbstract We present a formalism for computing classically measurable quantities directly from on-shell quantum scattering amplitudes. We discuss the ingredients needed for obtaining the classical result, and show how to set up the calculation to derive the result efficiently. We do this without specializing to a specific theory. We study in detail two examples in electrodynamics: the momentum transfer in spinless scattering to next-to-leading order, and the momentum radiated to leading order.http://link.springer.com/article/10.1007/JHEP02(2019)137Scattering AmplitudesClassical Theories of Gravity
spellingShingle David A. Kosower
Ben Maybee
Donal O’Connell
Amplitudes, observables, and classical scattering
Journal of High Energy Physics
Scattering Amplitudes
Classical Theories of Gravity
title Amplitudes, observables, and classical scattering
title_full Amplitudes, observables, and classical scattering
title_fullStr Amplitudes, observables, and classical scattering
title_full_unstemmed Amplitudes, observables, and classical scattering
title_short Amplitudes, observables, and classical scattering
title_sort amplitudes observables and classical scattering
topic Scattering Amplitudes
Classical Theories of Gravity
url http://link.springer.com/article/10.1007/JHEP02(2019)137
work_keys_str_mv AT davidakosower amplitudesobservablesandclassicalscattering
AT benmaybee amplitudesobservablesandclassicalscattering
AT donaloconnell amplitudesobservablesandclassicalscattering