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oai:recercat.cat:2445/1814422025-11-21T05:50:03Zcom_2072_1057col_2072_478823col_2072_478917

Cosmic censorship violation in black hole collisions in higher dimensions Andrade, Tomás Emparan García de Salazar, Roberto A. Licht, David Luna i Perelló, Raimon Forats negres (Astronomia) Astrofísica Gravetat Black holes (Astronomy) Astrophysics Gravity We argue that cosmic censorship is violated in the collision of two black holes in high spacetime dimension D when the initial total angular momentum is sufficiently large. The two black holes merge and form an unstable bar-like horizon, which grows a neck in its middle that pinches down with diverging curvature. When D is large, the emission of gravitational radiation is strongly suppressed and cannot spin down the system to a stable rotating black hole before the neck grows. The phenomenon is demonstrated using simple numerical simulations of the effective theory in the 1/D expansion. We propose that, even though cosmic censorship is violated, the loss of predictability is small independently of D. 2021-11-24T17:46:48Z 2021-11-24T17:46:48Z 2019-04-01 2021-11-24T17:46:48Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 1126-6708 https://hdl.handle.net/2445/181442 696220 eng Reproducció del document publicat a: https://doi.org/10.1007/JHEP04(2019)121 Journal of High Energy Physics, 2019, vol. 04, p. 121 https://doi.org/10.1007/JHEP04(2019)121 info:eu-repo/grantAgreement/EC/H2020/692951/EU//GravBHs cc-by (c) Andrade, Tomás et al., 2019 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess application/pdf application/pdf Springer Verlag Articles publicats en revistes (Física Quàntica i Astrofísica)