Hearts of Darkness: probing the regularization of space-time singularities

          @misc{ scivideos_PIRSA:24020050,
            doi = {10.48660/24020050},
            url = {https://pirsa.org/24020050},
            author = {Vellucci, Vania},
            keywords = {Cosmology},
            language = {en},
            title = {Hearts of Darkness: probing the regularization of space-time singularities },
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2024},
            month = {feb},
            note = {PIRSA:24020050 see, \url{https://scivideos.org/pirsa/24020050}}
          }
          

Abstract

 

In a complete theory of gravity we expect space-time singularities to be regularized by quantum effects. From this point of view, we have two possible regular alternatives to singular black holes (BHs) to describe the ultracompact objects that we saw in our universe: regular black holes and horizonless compact objects. I will talk about the possible structures of these black hole mimickers and the gravitational waves ringdown signal that we expect from their coalescence. In particular I will focus on the deviations in the spectrum of QNMs with respect to singular BHs, their possible detectability and the structure of echoes when backreaction effects are taken into account.

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