Abstract
A Page curve for an evaporating black hole in asymptotically flat spacetime is computed by adapting the Quantum Ryu-Takayanagi (QRT) proposal to an analytically solvable semi-classical two-dimensional dilaton gravity theory. The Page time is found to be one third of the black hole lifetime, at leading order in semi-classical corrections. A Page curve is also obtained for a semi-classical eternal black hole, where energy loss due to Hawking evaporation is balanced by an incoming energy flux.
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Gautason, F.F., Schneiderbauer, L., Sybesma, W. et al. Page curve for an evaporating black hole. J. High Energ. Phys. 2020, 91 (2020). https://doi.org/10.1007/JHEP05(2020)091
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DOI: https://doi.org/10.1007/JHEP05(2020)091