Plausible scenario for a generic violation of the weak cosmic censorship conjecture in asymptotically flat four dimensions

Understand

We present a plausible counterexample to the weak cosmic censorship conjecture in the four-dimensional Einstein-Scalar theory with asymptotically flat boundary conditions.

• Our setup stems from the analysis of the massive Klein-Gordon equation on a fixed Kerr black hole background.
• In particular, we construct the quasinormal spectrum numerically, and analytically in the WKB approximation, then go on to compute its backreaction on the Kerr geometry.
• In the regime of parameters where the analytic and numerical techniques overlap we find perfect agreement.