Improved unimodular black holes with self-consistent renormalization scale identification

Abstract

We consider the renormalization group improvement of unimodular black hole metrics with an identification of the renormalization scale as a function of the radial coordinate that is self-consistent in that it depends on parameters of the improved metric. Considering identifications that are motivated by minimality and dimensional analysis, we arrive at a number of non-singular unimodular black hole metrics. We determine the black hole mass gaps and note the qualitative similarities to other non-singular black hole metrics that have been discussed in the literature.