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Nov 2, 2019 at 8:37 comment added safesphere "There is nothing special about the event horizon. It doesn't have unusually high curvature or any other unusual properties." - In any frame of reference (defined as the coordinate system of a physical observer), time stops and the spatial metric diverges at the horizon. (Note that a falling observer does not have a frame at the horizon.) Consequently the horizon has a lot of special properties, even if spacetime is asymptotically flat there. For example, assuming the Schwarzschild interior, the singularity is not a cause, but a result of the horizon (based on the time direction inside).
Jan 27, 2018 at 15:52 comment added dcgeorge I'm sorry Ben but I don't understand your answer or how it's related to my question. My question isn't about time ending "... at some arbitrarily chosen time ..." (whatever that means) but about whether or not the entire spacetime manifold ends at the event horizon.
Jan 22, 2018 at 19:57 comment added user4552 @ErikJörgenfelt: Before renormalization, they get all kinds of unphysical results, such as divergences of various quantities at the event horizon of a black hole.
Jan 6, 2018 at 17:56 comment added Erik Jörgenfelt I would be interested in some examples of falsified predictions.
Jan 4, 2018 at 23:02 history answered user4552 CC BY-SA 3.0