Aoude, Rafael and Haddad, Kays and Helset, Andreas (2021) Tidal effects for spinning particles. Journal of High Energy Physics, 2021 (3). Art. No. 97. ISSN 1029-8479. doi:10.1007/jhep03(2021)097. https://resolver.caltech.edu/CaltechAUTHORS:20210311-130049898
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Abstract
Expanding on the recent derivation of tidal actions for scalar particles, we present here the action for a tidally deformed spin-1/2 particle. Focusing on operators containing two powers of the Weyl tensor, we combine the Hilbert series with an on-shell amplitude basis to construct the tidal action. With the tidal action in hand, we compute the leading-post-Minkowskian tidal contributions to the spin-1/2–spin-1/2 amplitude, arising at O(G²). Our amplitudes provide evidence that the observed long range spin-universality for the scattering of two point particles extends to the scattering of tidally deformed objects. From the scattering amplitude we find the conservative two-body Hamiltonian, linear and angular impulses, eikonal phase, spin kick, and aligned-spin scattering angle. We present analogous results in the electromagnetic case along the way.
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Additional Information: | © 2021 The Authors. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Article funded by SCOAP3. Received: December 18, 2020; Accepted: January 29, 2021; Published: March 9, 2021. We thank Clifford Cheung, Andrés Luna, Ben Maybee, and Julio Parra-Martinez for related discussions. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 764850 “SAGEX” and by the F.R.S.-FNRS with the EOS — be.h project n. 30820817. A.H. is supported by the DOE under grant no. DE-SC0011632 and by the Walter Burke Institute for Theoretical Physics. | ||||||||||||
Group: | Walter Burke Institute for Theoretical Physics | ||||||||||||
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Subject Keywords: | Effective Field Theories; Scattering Amplitudes; Black Holes | ||||||||||||
Issue or Number: | 3 | ||||||||||||
DOI: | 10.1007/jhep03(2021)097 | ||||||||||||
Record Number: | CaltechAUTHORS:20210311-130049898 | ||||||||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20210311-130049898 | ||||||||||||
Official Citation: | Aoude, R., Haddad, K. & Helset, A. Tidal effects for spinning particles. J. High Energ. Phys. 2021, 97 (2021). https://doi.org/10.1007/JHEP03(2021)097 | ||||||||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
ID Code: | 108399 | ||||||||||||
Collection: | CaltechAUTHORS | ||||||||||||
Deposited By: | Tony Diaz | ||||||||||||
Deposited On: | 12 Mar 2021 18:54 | ||||||||||||
Last Modified: | 16 Nov 2021 19:11 |
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