Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 10, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2021/10/012
Keywords
GR black holes; gravity; modified gravity; quantum field theory on curved space
Funding
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [NRF-2018R1C1B6004349]
- Dongguk University Research Fund of 2021
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We investigate the weak cosmic censorship conjecture in extremal and near-extremal Kerr-Newman-(anti-)de Sitter black holes by scattering a massive scalar field with charge. While the black hole may exceed its extremal condition due to changes in its state caused by the scattering, it cannot be overcharged or overspun. The weak cosmic censorship conjecture is valid for any scalar field boundary conditions and is thermodynamically preferred for this scattering process.
We investigate the weak cosmic censorship conjecture in extremal and nearextremal Kerr-Newman-(anti-)de Sitter black holes by the scattering of a massive scalar field with an electric charge. Under this scattering, the scalar field fluxes change the black hole state, as determined by the mass, angular momentum, and electric charge. The black hole may exceed its extremal condition because of these changes. However, we find that the black hole cannot be overcharged or overspun by the scattering. In particular, although the fluxes are closely associated with the asymptotic boundary conditions along the flat, anti-de Sitter, and de Sitter spacetimes, the weak cosmic censorship conjecture is valid for any scalar field boundary conditions. Moreover, the validity of the weak cosmic censorship conjecture is thermodynamically preferred for this scattering.
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