Black hole decay and Fast Radio Bursts


Rovelli, C. (2015). Black hole decay and Fast Radio Bursts. Perimeter Institute. https://pirsa.org/15060006


Rovelli, Carlo. Black hole decay and Fast Radio Bursts. Perimeter Institute, Jun. 04, 2015, https://pirsa.org/15060006


          @misc{ pirsa_15060006,
            doi = {},
            url = {https://pirsa.org/15060006},
            author = {Rovelli, Carlo},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Black hole decay and Fast Radio Bursts},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {jun},
            note = {PIRSA:15060006 see, \url{https://pirsa.org}}


Quantum effects render black holes unstable.  Besides Hawking radiation there is another, genuinely quantum gravitational, source of instability: the Hajicek-Kiefer explosion via tunnelling to a white hole.  A recent result in classical general relativity makes this decay channel plausible: there is an exact external solution of the Einstein equations locally (but not globally) isometric to extended Schwarzschild, which describes an object collapsing into a black hole and then exploding out of a white hole. The tunnelling time can in principle be computed using Loop Quantum Gravity. If it is sufficiently short, present explosions of primordial black hole could be observables, opening a new observational window on quantum gravity. I discuss the possibility that these explosions could be related to the recently observed and mysterious Fast Radio Bursts.