Papers › Covariant Compton Amplitudes in Gravity with Classical Spin

Covariant Compton Amplitudes in Gravity with Classical Spin

20 Sep 2023arXiv:2309.11249links table onlyarchive 2025-07-28

N. Emil J. Bjerrum-Bohr, Gang Chen, Marcos Skowronek

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We develop a novel amplitude bootstrap technique manifestly free of unphysical poles for classically spinning particles interacting with gravitons utilizing only the double-copy and physical factorization limits. Combined with non-factorization polynomial contact contributions from physical data for Kerr black holes, we can address high-spin-order covariant gravitational Compton amplitudes, identifying a pattern for the amplitude that we believe could extend to all orders in spin. Finally, we outline applications and outstanding questions.

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