Electromagnetic albedo of Quantum Black Holes

Journal of High Energy Physics

Wan Zhen Chua¹  Niayesh Afshordi² 

[1] Perimeter Institute For Theoretical Physics, 31 Caroline St N, N2L 2Y5, Waterloo, ON, Canada;Department of Physics and Astronomy, University of Waterloo, N2L 3G1, Waterloo, ON, Canada;Department of Physics, Cornell University, Ithaca, New York, USA;Perimeter Institute For Theoretical Physics, 31 Caroline St N, N2L 2Y5, Waterloo, ON, Canada;Department of Physics and Astronomy, University of Waterloo, N2L 3G1, Waterloo, ON, Canada;Waterloo Centre for Astrophysics, University of Waterloo, N2L 3G1, Waterloo, ON, Canada;

关键词: Black Holes;    Nonperturbative Effects;    Black Holes in String Theory;    Scattering Amplitudes;   

DOI  :  10.1007/JHEP07(2021)006

来源: Springer

【 摘 要 】

We compute the albedo (or reflectivity) of electromagnetic waves off the electron-positron Hawking plasma that surrounds the horizon of a Quantum Black Hole. We adopt the “modified firewall conjecture” for fuzzballs [1, 2], where we consider significant electromagnetic interaction around the horizon. While prior work has treated this problem as an electron-photon scattering process, we find that the incoming quanta interact collectively with the fermionic excitations of the Hawking plasma at low energies. We derive this via two different methods: one using relativistic plasma dispersion relation, and another using the one-loop correction to photon propagator. Both methods find that the reflectivity of long wavelength photons off the Hawking plasma is significant, contrary to previous claims. This leads to the enhancement of the electromagnetic albedo for frequencies comparable to the Hawking temperature of black hole horizons in vacuum. We comment on possible observable consequences of this effect.

【 授权许可】

CC BY