Year: 2020
Type: article
Abstract: We study the reflectivity of quantum black hole (BH) horizons using detailed balance and fluctuation-dissipation theorem, finding a universal flux reflectivity given by the Boltzmann factor ℛ = exp (−(ℏ | |)/( k T H )), where ̃ω is frequency in the horizon frame and T H is the Hawking temperature. This implies CP-symmetry (or ℝℙ 3 topology) of the extended BH spacetime. We then briefly discuss related physical implications: we predict echoes in the ringdown of Kerr BHs, but they do not exhibit ergoregion instability. The viscosity in the membrane paradigm is modified to η = ( c 3 )/(16π G ) tan h ((ℏ | | )/(4 k T H )), only approaching General Relativistic value at high frequencies.
Authors: Naritaka Oshita, Qingwen Wang, Niayesh Afshordi
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2942731935