  We investigate semiclassical backreaction on a conical naked singularity
space-time with a negative cosmological constant in (2+1)-dimensions. In
particular, we calculate the renormalized quantum stress-energy tensor for a
conformally coupled scalar field on such naked singularity space-time. We then
obtain the backreacted metric via the semiclassical Einstein equations. We show
that, in the regime where the semiclassical approximation can be trusted,
backreaction dresses the naked singularity with an event horizon, thus
enforcing cosmic censorship.
