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Hovering black holes

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If you have a question about this talk, please contact Mahdi Godazgar.

We construct the holographic dual of an electrically charged localised defect in a conformal field theory at strong coupling. In doing so, we find that the theory sometimes flows to new IR fixed points, some of which we are able to find in a closed form. When the IR theory is either marginally connected to pure AdS, or is AdS itself, we find that a new gravitational phenomena occurs: for an impurity of a sufficiently large amplitude, a spherical extremal Reissner-Nordstr̦m black hole nucleates in the domain of outer communications Рa hovering black hole. We construct this new phase, for many choices of boundary chemical potential profile, and study its properties. We find a universal curve for the entropy of the defect as a function of its amplitude, reminiscent of an adiabatic Choptuik critical scaling. We comment on the possible field theory implications of our results.

This talk is part of the Theoretical Physics Colloquium series.

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