Can BMS Supertranslations Make a Black Hole Naked?
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Can BMS Supertranslations Make a Black Hole Naked?
❱ Yes
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BMS supertranslations are symmetries of an asymptotically flat spacetime. When we say that a physical system has symmetries we mean that there exist transformations that could be performed on our system without affecting the outcome of experiments.
Mass, charge, angular momentum (and consequently temperature) of a black hole are all quantities that are unaffected by the action of BMS group. So, no, BMS supertranslations could not make a black hole naked.
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