EFT Coffee: Rafael Aoude, "Amplitudes for Hawking Radiation"

Friday 14 Feb 2025, 13:15 → 14:30 Europe/Zurich

4/2-037 - TH meeting room (CERN)

Meeting for informal discussion of EFT-related topics. 
List of potential papers to be discussed

13:15 → 13:30 Coffee

13:30 → 14:30 Amplitudes for Hawking Radiation

In this talk, I will show a new approach to compute Hawking radiation based on on-shell scattering amplitudes. The Hawking spectrum is obtained by exponentiating a series of Feynman diagrams describing a massless scalar field scattering through a collapse background. Using semiclassical methods, we obtain a generalized in-in amplitude closely connected to the Bogoliubov coefficients. Finally, I will show how subdominant one-loop correction can be interpreted as finite-size corrections sensitive to the radius of the black hole.

Speaker: Rafael Aoude