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SUMMARY:Can Black Holes Evaporate Past Extremality?
DTSTART:20260520T124500Z
DTEND:20260520T140000Z
DTSTAMP:20260613T233600Z
UID:indico-event-16579@indico.math.cnrs.fr
CONTACT:cecile@ihes.fr
DESCRIPTION:Speakers: Samuel Gralla (University of Arizona)\n\nSéminaire 
 Amplitudes et Gravitation sur l'Yvette (IHES/IPhT)\nBlack holes with suffi
 ciently large initial charge and mass will Hawking-evaporate towards the e
 xtremal limit. The emission slows as the temperature approaches zero\, but
  still reaches the point where a single Hawking quantum would make the obj
 ect superextremal\, removing the horizon. We take this semiclassical predi
 ction at face value and ask: When the emission occurs\, what is revealed?
   Using a simple thin-shell model for the matter originally forming the b
 lack hole\, we find that this matter *re-emerges* after the horizon is rem
 oved and subsequently expands back to large radius.  This expanding remna
 nt has been bathed in the ingoing Hawking quanta during evaporation and pr
 esumably carries correlations with the outgoing quanta\, offering the attr
 active possibility of studying information paradox issues in a setup where
  spacetime curvatures are globally small\, so that quantum gravity is not 
 required.\n \nPour être informé des prochains séminaires vous pouvez v
 ous abonner à la liste de diffusion en écrivant un mail à sympa@listes.
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 \nhttps://indico.math.cnrs.fr/event/16579/
LOCATION:Amphithéâtre Léon Motchane (IHES)
URL:https://indico.math.cnrs.fr/event/16579/
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