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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Displaying all lectures given by: James Bardeen


PIRSA:14090001  ( MP4 Medium Res , MP3 , PDF ) Which Format?
Black hole evaporation without firewalls
Speaker(s): James Bardeen
Abstract: There need not be any conflict between unitarity, locality, and regularity of the horizon in black hole evaporation. I discuss a scenario in which the initial collapse that forms the black hole results in a small non-singular core inside an inner event horizon. This core grows as the result of... read more
Date: 02/09/2014 - 11:00 am

Black hole evaporation and unitarity: a semi-classical resolution?
Speaker(s): James Bardeen
Abstract:
I explore the possibility that semi-classical back-reaction, due to the partners of the Hawking radiation quanta accumulating over the time for the black hole to lose about one half of its mass (the Page time), might cause the trapped surfaces to disappear, permitting unitary evolution wit... read more
Date: 10/07/2013 - 3:00 pm

Numerical Relativity on Constant Mean Curvature Hypersurfaces
Speaker(s): James Bardeen
Abstract: Constant mean curvature (uniform K) hypersurfaces extend to future null infinity in asymptotically flat spacetimes. With conformal compactification, the entire hypersurface can be covered by a finite spatial grid, eliminating any need an "outgoing wave" boundary condition or for extrapolation to fin... read more
Date: 13/10/2011 - 1:00 pm
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