On Reflectivity of Quantum Black Hole Horizons
May 1, 2019
15 pages
Published in:
- JCAP 04 (2020) 016
- Published: Apr 14, 2020
e-Print:
- 1905.00464 [hep-th]
DOI:
- 10.1088/1475-7516/2020/04/016 (publication)
View in:
Citations per year
Abstract: (IOP)
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 &calR; = &exp;(−(ℏ |&tildeomega;|)/(k TH)), where ˜ω is frequency in the horizon frame and TH is the Hawking temperature. This implies CP-symmetry (or &BbbR;&BbbP;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 = (c3)/(16πG) tanh((ℏ |&tildeomega;| )/(4 k TH)), only approaching General Relativistic value at high frequencies.Note:
- 15 pages, 5 figures, appendixes added
- black hole: quantum
- black hole: horizon
- temperature: Hawking
- frequency: high
- space-time
- viscosity
- stability
- membrane
- topology
- Kerr
References(48)
Figures(5)