Can we observe fuzzballs or firewalls?
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Publication:2413757
DOI10.1007/JHEP07(2018)162zbMATH Open1395.83030arXiv1711.01617MaRDI QIDQ2413757
Author name not available (Why is that?)
Publication date: 14 September 2018
Published in: (Search for Journal in Brave)
Abstract: In the fuzzball paradigm the information paradox is resolved because the black hole is replaced by an object with no horizon. One may therefore ask if observations can distinguish a traditional hole from a fuzzball. We find: (a) It is very difficult to reflect quanta off the surface of a fuzzball, mainly because geodesics starting near the horizon radius cannot escape to infinity unless their starting direction is very close to radial. (b) If infalling particles interact with the emerging radiation before they are engulfed by the horizon, then we say that we have a `firewall behavior'. We consider several types of interactions, but find no evidence for firewall behavior in any theory that obeys causality. (c) Photons with wavelengths {it larger} than the black hole radius can be scattered off the emerging radiation, but a very small fraction of the backscattered photons will be able to escape back to infinity.
Full work available at URL: https://arxiv.org/abs/1711.01617
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