On the double copy for spinning matter

Abstract We explore various tree-level double copy constructions for amplitudes including massive particles with spin. By working in general dimensions, we use that particles with spins s ≤ 2 are fundamental to argue that the corresponding double copy relations partially follow from compactification...

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Autores principales:	Yilber Fabian Bautista, Alfredo Guevara
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Scattering Amplitudes Classical Theories of Gravity Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/49cba615bd824a81ae107fc19211f8a2
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spelling	oai:doaj.org-article:49cba615bd824a81ae107fc19211f8a22021-12-05T12:25:00ZOn the double copy for spinning matter10.1007/JHEP11(2021)1841029-8479https://doaj.org/article/49cba615bd824a81ae107fc19211f8a22021-11-01T00:00:00Zhttps://doi.org/10.1007/JHEP11(2021)184https://doaj.org/toc/1029-8479Abstract We explore various tree-level double copy constructions for amplitudes including massive particles with spin. By working in general dimensions, we use that particles with spins s ≤ 2 are fundamental to argue that the corresponding double copy relations partially follow from compactification of their massless counterparts. This massless origin fixes the coupling of gluons, dilatons and axions to matter in a characteristic way (for instance fixing the gyromagnetic ratio), whereas the graviton couples universally reflecting the equivalence principle. For spin-1 matter we conjecture all-order Lagrangians reproducing the interactions with up to two massive lines and we test them in a classical setup, where the massive lines represent spinning compact objects such as black holes. We also test the amplitudes via CHY formulae for both bosonic and fermionic integrands. At five points, we show that by applying generalized gauge transformations one can obtain a smooth transition from quantum to classical BCJ double copy relations for radiation, thereby providing a QFT derivation for the latter. As an application, we show how the theory arising in the classical double copy of Goldberger and Ridgway can be naturally identified with a certain compactification of N $$ \mathcal{N} $$ = 4 Supergravity.Yilber Fabian BautistaAlfredo GuevaraSpringerOpenarticleScattering AmplitudesClassical Theories of GravityNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENJournal of High Energy Physics, Vol 2021, Iss 11, Pp 1-64 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Scattering Amplitudes Classical Theories of Gravity Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Scattering Amplitudes Classical Theories of Gravity Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Yilber Fabian Bautista Alfredo Guevara On the double copy for spinning matter
description	Abstract We explore various tree-level double copy constructions for amplitudes including massive particles with spin. By working in general dimensions, we use that particles with spins s ≤ 2 are fundamental to argue that the corresponding double copy relations partially follow from compactification of their massless counterparts. This massless origin fixes the coupling of gluons, dilatons and axions to matter in a characteristic way (for instance fixing the gyromagnetic ratio), whereas the graviton couples universally reflecting the equivalence principle. For spin-1 matter we conjecture all-order Lagrangians reproducing the interactions with up to two massive lines and we test them in a classical setup, where the massive lines represent spinning compact objects such as black holes. We also test the amplitudes via CHY formulae for both bosonic and fermionic integrands. At five points, we show that by applying generalized gauge transformations one can obtain a smooth transition from quantum to classical BCJ double copy relations for radiation, thereby providing a QFT derivation for the latter. As an application, we show how the theory arising in the classical double copy of Goldberger and Ridgway can be naturally identified with a certain compactification of N $$ \mathcal{N} $$ = 4 Supergravity.
format	article
author	Yilber Fabian Bautista Alfredo Guevara
author_facet	Yilber Fabian Bautista Alfredo Guevara
author_sort	Yilber Fabian Bautista
title	On the double copy for spinning matter
title_short	On the double copy for spinning matter
title_full	On the double copy for spinning matter
title_fullStr	On the double copy for spinning matter
title_full_unstemmed	On the double copy for spinning matter
title_sort	on the double copy for spinning matter
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/49cba615bd824a81ae107fc19211f8a2
work_keys_str_mv	AT yilberfabianbautista onthedoublecopyforspinningmatter AT alfredoguevara onthedoublecopyforspinningmatter
_version_	1718371953708892160

On the double copy for spinning matter

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