Tidal effects for spinning particles
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- Aoude2021_Article_TidalEffectsForSpinningParticl
Final published version, 632 KB, PDF document
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(G(2)). 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.
Original language | English |
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Article number | 097 |
Journal | Journal of High Energy Physics |
Volume | 2021 |
Issue number | 3 |
Number of pages | 37 |
ISSN | 1029-8479 |
DOIs | |
Publication status | Published - 9 Mar 2021 |
- Effective Field Theories, Scattering Amplitudes, Black Holes
Research areas
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