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arXiv · 2512.23697

Note on the Kerr Spinning-Particle Equations of Motion

Joon-Hwi Kim
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Abstract

We implement a probe counterpart of Newman-Janis algorithm, which Wick rotates the all-orders geodesic deviation equation into a part of exact spinning-particle equations of motion. Consequently, the gravitational dynamics of the Kerr black hole in its point-particle effective theory is completely constrained in the self-dual sector for a hidden symmetry, implying the spin exponentiation of same-helicity gravitational Compton amplitudes to all multiplicities.

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Joon-Hwi Kim. 2025-12-29. Note on the Kerr Spinning-Particle Equations of Motion. https://arxiv.org/abs/2512.23697

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