TY - JOUR

T1 - Gravitational Collapse in Quantum Einstein Gravity

AU - Bonanno, Alfio

AU - Koch, Benjamin

AU - Platania, Alessia

N1 - Funding Information: 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. 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. Publisher Copyright: © 2018, Springer Science+Business Media, LLC, part of Springer Nature.

PY - 2018/10/1

Y1 - 2018/10/1

N2 - 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.

AB - 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.

KW - Asymptotic safety

KW - Gravitational collapse

KW - Quantum gravity

UR - http://www.scopus.com/inward/record.url?scp=85051431911&partnerID=8YFLogxK

U2 - 10.1007/s10701-018-0195-7

DO - 10.1007/s10701-018-0195-7

M3 - Journal article

AN - SCOPUS:85051431911

VL - 48

SP - 1393

EP - 1406

JO - Foundations of Physics

JF - Foundations of Physics

SN - 0015-9018

IS - 10

ER -