Massive scalar wave packet emission by a charged Black Hole and Cosmic Censorship Conjecture viol...

Palestra: Massive scalar wave packet emission by a charged Black Hole and Cosmic Censorship Conjecture violation Palestrante: Dr. Rodrigo Fernandez Resumo: We study the tunneling probability of a massive (m_w) uncharged scalar packet out from a near-extremal, static charged black hole (with mass M and charge Q \lesssim M). We show that there is indeed a net probability that a massive uncharged particle tunnels out from the black hole so that the final state (with new mass M' \equiv M-m_w less than Q) does violate the cosmic censorship conjecture. Nevertheless, the typical time for such a black hole to discharge (i.e, to absorb charge -Q from its surroundings and then become neutral) is much smaller than the tunneling time; therefore, the violation is never attained in practice. Even for a completely isolated black hole (should it exist), the standard time dilation near the horizon stretches the typical violation time scale to unobservable values. Lista de presença: https://forms.gle/vRPqFRViebkcRSnX9 V Congresso Brasileiro de Física https://www.congressobrasileirodefisi... REALIZAÇÃO Associação Brasileira de Física https://www.abfisica.org.br APOIO Revista Brasileira de Física https://www.revistabrasileiradefisica...