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Tidal effects for spinning particles
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DOI：10.1007/JHEP03(2021)097.png)
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摘要
En 中文
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.
Keyword:
Effective Field Theories
Scattering Amplitudes
Black Holes
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期刊
IF:
5.5
论文数:
4.0W
被引数:
13.7W
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