Jul 20 – 24, 2015
Frankfurt Institute for Advanced Studies
Europe/Berlin timezone

A quantum cosmic censorship

Jul 21, 2015, 4:00 PM
30m
Lecture Hall (FIAS)

Lecture Hall

FIAS

Speaker

Roberto Casadio (Alma Mater Bologna University)

Description

We propose to investigate the Cosmic Censorship Conjecture in the quantum domain by means of the horizon wave-function (HWF) formalism applied to a spherically symmetric Gaussian state. When the charge-to-mass ratio q<1, the formalism allows for a straightforward quantum mechanical description of both inner and outer horizons. For q>1, where the classical theory predicts a naked singularity, one can still obtain a normalisable HWF below a critical value q^2~2, with a non-vanishing probability of being a black hole instead. However, the HWF is not normalisable above q^2~2, and the uncertainty in the location of the horizon blows up there, signalling that such states are indeed not well-defined and most likely very unstable.

Primary author

Roberto Casadio (Alma Mater Bologna University)

Co-author

Dr Octavian Micu (Institute of Space Science)

Presentation materials