The simplest massive S-matrix: from minimal coupling to black holes
By M. Chung, Yu-tin Huang, Jung-Wook Kim, Sangmin Lee. Journal of High Energy Physics, 2018
218 citations recorded by the source corpus.
A bstractIn this paper, we explore the physics of electromagnetically and gravitationally coupled massive higher spin states from the on-shell point of view. Starting with the three-point amplitude, we focus on the simplest amplitude characterized by matching to minimal coupling in the UV. In the IR, for charged states this leads to g = 2 for arbitrary spin, and the leading deformation corresponds to the anomalous magnetic dipole moment. We proceed to construct the (gravitational) Compton amplitude for generic spins via consistent factorization. We find that in gravitation couplings, the leading deformation leads to inconsistent factorization. This implies that for systems with Gauge2 = Gravity relations, such as perturbative string theory, all charged states must have g = 2. It is then natural to ask for generic spin, what is the theory that yields such minimal coupling. By matching to the one body effective action, we verify that for large spins the answer is Kerr black holes. This identification is then an on-shell avatar of the no- hair theorem. Finally using this identification as well as the newly constructed Compton amplitudes, we proceed to compute the spin-dependent pieces for the classical potential at 2PM order up to degree four in spin operator of either black holes.
Subfields: Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/61586f3c399e45a3c614dfaecf95a8e583eb33b7
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Citations in the corpus
- Revisiting the second post-Minkowskian eikonal and the dynamics of binary black holes (2019, background): “(2)See [21, 22, 23] for a recent analysis of the amplitude approach to this case.”
- Classical and quantum scattering in post-Minkowskian gravity (2019, background): “] Let us also mention some further (partly conjectural) work concerning the link between the gravitational scattering amplitude of spinning particles and the classical gravitational interaction of Kerr black holes [29–33], as well as work on the computation of classically measurable quantities from ”
- From boundary data to bound states. Part II. Scattering angle to dynamical invariants (with twist) (2019, background): “Therefore, provided the matching discussed in [15–18] carries over to spin, as suggested in [19–26], the existence of this gauge is guarantee to all PM orders.”
- Double copy for massive quantum particles with spin (2019, methodology): “c 3 V 1{ V 2j = ig p 2 Tc i| (p 1 p 2)+ (p p 3)+ (p p) : Note that it does not coincide with what one would obtain from the free Proca Lagrangian (2.14) by a simple replacement @!D[81]. The non-abelian-like interaction is required for obtaining a scattering amplitude that is well-behaved in the mas”
- Spinning black hole binary dynamics, scattering amplitudes, and effective field theory (2020, methodology): “Bootstrapping results for Kerr black holes from massive-spinor-helicity method however is known to have ambiguities beyond quartic order in spins at G2 [37, 59, 60, 62], as new spin-multipole moments are allowed.”
- Radiative contribution to classical gravitational scattering at the third order in G (2020, unknown): “[26–34] for PM-type works on spinning bodies.”
- Post-Minkowskian effective field theory for conservative binary dynamics (2020, unknown): “[3, 62–91].”