Strong gravity effects of charged Q-clouds and inflating black holes

Autor(es)

Brihaye, Yves ^[1] ; Hartmann, Betti ^{[2, 3, 4]}

Afiliação do(s) autor(es)

^[1] Univ Mons Hainaut, Phys Math, B-7000 Mons - Belgium

^[2] Univ Sao Paulo, Inst Fis Sao Carlos IFSC, CP 369, BR-13560970 Sao Carlos, SP - Brazil

^[3] Jacobs Univ Bremen, Dept Phys & Earth Sci, D-28759 Bremen - Germany

^[4] Carl von Ossietzky Univ Oldenburg, Fak Phys, D-26111 Oldenburg - Germany

• Tipo de documento: Artigo Científico
• Fonte: Classical and Quantum Gravity; v. 38, n. 6 MAR 18 2021.
• Citações Web of Science: 0

Resumo

In this paper, we re-examine charged Q-clouds around spherically symmetric, static black holes. In particular, we demonstrate that for fixed coupling constants two different branches of charged scalar clouds exist around Schwarzschild black holes. This had not been noticed previously. We find that the new solutions possess a x201b;hard wall' at maximal possible gauge coupling. This wall separates the interior (containing the black hole horizon), in which the scalar field is trapped in the x201b;false vacuum', from the x201b;true vacuum' exterior. When taking back-reaction onto the space-time into account, we find that at maximal possible back-reaction, the black hole solutions corresponding to these two branches either become extremal black holes with diverging scalar field derivative on the horizon or inflating black holes with a second, x201b;cosmological' horizon which-outside this second horizon-correspond to extremal Reissner-Nordstrom black holes. (AU)

• Processo FAPESP: 19/01511-5 - Buracos negros e solitons em modelos generalizados de gravidade escalar-tensorial
• Beneficiário: Betti Hartmann
• Modalidade de apoio: Auxílio à Pesquisa - Regular