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  SUSY in the Sky with Gravitons

Jakobsen, G. U., Mogull, G., Plefka, J., & Steinhoff, J. (2022). SUSY in the Sky with Gravitons. Journal of High Energy Physics, 2022(01): 027. doi:10.1007/JHEP01(2022)027.

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2109.04465.pdf (Preprint), 690KB
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 Creators:
Jakobsen, Gustav Uhre, Author
Mogull, Gustav1, Author              
Plefka, Jan, Author
Steinhoff, Jan1, Author              
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: High Energy Physics - Theory, hep-th,General Relativity and Quantum Cosmology, gr-qc
 Abstract: Picture yourself in the wave zone of a gravitational scattering event of two massive, spinning compact bodies (black holes, neutron stars or stars). We show that this system of genuine astrophysical interest enjoys a hidden $\mathcal{N}=2$ supersymmetry, at least to the order of spin-squared (quadrupole) interactions in arbitrary $D$ spacetime dimensions. Using the ${\mathcal N}=2$ supersymmetric worldline action, augmented by finite-size corrections for the non-Kerr black hole case, we build a quadratic-in-spin extension to the worldline quantum field theory (WQFT) formalism introduced in our previous work, and calculate the two bodies' deflection and spin kick to sub-leading order in the post-Minkowskian expansion in Newton's constant $G$. For spins aligned to the normal vector of the scattering plane we also obtain the scattering angle. All $D$-dimensional observables are derived from an eikonal phase given as the free energy of the WQFT, that is invariant under the $\mathcal{N}=2$ supersymmetry transformations.

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 Dates: 2021-09-092022
 Publication Status: Published in print
 Pages: 41 pages including references
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 Rev. Type: -
 Identifiers: arXiv: 2109.04465
DOI: 10.1007/JHEP01(2022)027
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Title: Journal of High Energy Physics
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Pages: - Volume / Issue: 2022 (01) Sequence Number: 027 Start / End Page: - Identifier: -