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Gravitational Collapse in Quantum Einstein Gravity

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Abstract

The existence of spacetime singularities is one of the biggest problems of nowadays physics. According to Penrose, each physical singularity should be covered by a “cosmic censor” which prevents any external observer from perceiving their existence. However, classical models describing the gravitational collapse usually results in strong curvature singularities, which can also remain “naked” for a finite amount of advanced time. This proceedings studies the modifications induced by asymptotically safe gravity on the gravitational collapse of generic Vaidya spacetimes. It will be shown that, for any possible choice of the mass function, quantum gravity makes the internal singularity gravitationally weak, thus allowing a continuous extension of the spacetime beyond the singularity.

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Acknowledgements

We would like to thank the organizers of the workshop Lemaître for their hospitality and for creating a highly stimulating scientific atmosphere. B.K. acknowledges Fondecyt 1161150.

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Authors and Affiliations

  1. INAF, Osservatorio Astrofisico di Catania, via S. Sofia 78, 95123, Catania, Italy

    Alfio Bonanno & Alessia Platania

  2. INFN, Sezione di Catania, via S. Sofia 64, 95123, Catania, Italy

    Alfio Bonanno & Alessia Platania

  3. Instituto de Física, Pontificia Universidad Católica de Chile, Av. Vicuna Mackenna 4860, Santiago, Chile

    Benjamin Koch

  4. Università degli Studi di Catania, via S. Sofia 63, 95123, Catania, Italy

    Alessia Platania

Authors
  1. Alfio Bonanno
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  2. Benjamin Koch
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  3. Alessia Platania
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Corresponding author

Correspondence to Alessia Platania.

Additional information

Proceedings based on the talk given by A.P. at the workshop Lemaître, “Black Holes, Spacetime Singularities and Gravitational Waves”, held at the Vatican observatory, 9th–12th May 2017.

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Bonanno, A., Koch, B. & Platania, A. Gravitational Collapse in Quantum Einstein Gravity. Found Phys 48, 1393–1406 (2018). https://doi.org/10.1007/s10701-018-0195-7

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