Talk detail

Participant	Emelyanov, Viacheslav
Institution	Karlsruhe Institute of Technology - Wolfgang-Gaede-Str. 1 - Karlsruhe - Baden-Wuerttenberg - Germany

Session	BH2	Accepted		Order	Time
Talk	Oral abstract	Title	Across-horizon scattering and information transfer
Coauthors
Abstract	We address the question whether or not two electrically charged elementary particles can Coulomb scatter if one of these particles is inside the Schwarzschild black-hole horizon and the other outside. It can be shown that the quantum process is consistent with the local energy-momentum conservation law. This result implies that across-horizon scattering is a physical effect, relevant to astrophysical black holes. We propose a Gedankenexperiment which uses the quantum scattering process to transfer information from inside the black-hole horizon to outside.
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Session	EU2B	Accepted		Order	Time
Talk	Oral abstract	Title	Non-featureless Black-Hole Evaporation
Coauthors
Abstract	Macroscopic manifestations of a quantum system depend on both its state and external fields. A prime example of this in gravity is black-hole evaporation. We argue that evaporating black holes can give rise to an extra outward positive-energy flux. The spectral density of this flux turns out to be non-featureless, meaning that that carries unique information about its source, i.e. a black hole.
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