# Quantum gravity on the black hole horizon

@article{Gaddam2022QuantumGO, title={Quantum gravity on the black hole horizon}, author={Nava Gaddam and Nico Groenenboom and Gerard ’t Hooft}, journal={Journal of High Energy Physics}, year={2022}, volume={2022}, pages={1-13} }

We study scattering on the black hole horizon in a partial wave basis, with an impact parameter of the order of the Schwarzschild radius or less. This resembles the strong gravity regime where quantum gravitational effects appear. The scattering is governed by an infinite number of virtual gravitons exchanged on the horizon. Remarkably, they can all be summed non-perturbatively in ħ and γ ∼ M Pl /M BH . These results generalise those obtained from studying gravitational backreaction. Unlike in…

## 12 Citations

### Soft graviton exchange and the information paradox

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We show that there is a remarkable soft limit in quantum gravity where the information paradox is readily resolved due to virtual soft graviton exchange on the black hole horizon. This regime is…

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### Eikonal amplitudes from curved backgrounds

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Eikonal exponentiation in QFT describes the emergence of classical physics at long distances in terms of a non-trivial resummation of infinitely many diagrams.
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The gravitational shock waves have provided crucial insights into entanglement structures of black holes in the AdS/CFT correspondence. Recent progress on the soft hair physics suggests that these…

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We show that there is a remarkable soft limit in quantum gravity where the information paradox is readily resolved due to virtual soft graviton exchange on the black hole horizon. This regime is…

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