Regular black holes: from non-linear electrodynamics to pure gravity models

          @misc{ scivideos_PIRSA:25050014,
            doi = {10.48660/25050014},
            url = {https://pirsa.org/25050014},
            author = {Kubiznak, David},
            keywords = {Strong Gravity},
            language = {en},
            title = {Regular black holes: from non-linear electrodynamics to pure gravity models},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2025},
            month = {may},
            note = {PIRSA:25050014 see, \url{https://scivideos.org/pirsa/25050014}}
          }
          

Abstract

It is well known that (static) regular black hole spacetimes can be sourced by appropriately chosen theories of non-linear electrodynamics. More recently, it was shown that many such models can also be obtained as solutions of vacuum gravity equations, upon considering an infinite series of quasi-topological higher-curvature corrections. After reviewing both these approaches, I will show that the latter construction can be upgraded to yield regular black holes with vanishing inner horizon surface gravity -- a necessary condition for the absence of classical instabilities associated with mass inflation on the inner horizon. I will also comment on singular charged black holes in theories with finite electromagnetic self-energy.