Black Holes with Zero Mass
Abstract
We consider the spacetimes corresponding to static Global Monopoles with interior boundaries corresponding to a Black Hole Horizon and analyze the behavior of the appropriate ADM mass as a function of the horizon radius rH. We find that for small enough rH, this mass is negative as in the case of the regular global monopoles, but that for large enough rH the mass becomes positive encountering an intermediate value for which we have a Black Hole with zero ADM mass.
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