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SUMMARY:Roberto Emparan (University of Barcelona)\, Observing Quantum Grav
 ity in Extremely Cold Horizons
DTSTART:20260407T091500Z
DTEND:20260407T103000Z
DTSTAMP:20260414T110900Z
UID:indico-event-9576@indico.fysik.su.se
DESCRIPTION:Abstract: Recent developments have revealed that black holes n
 ear extremality exhibit large quantum fluctuations in their geometry\, mar
 king a controllable breakdown of semiclassical quantum field theory in cur
 ved spacetime. In this talk\, I will discuss how these fluctuations can be
  revealed through scattering waves off the black hole. In particular\, we 
 find that extremely cold black holes look larger when probed with scalar f
 ields\, but become transparent to low-frequency light or gravitational rad
 iation. Although such signatures are extraordinarily hard to detect\, they
  provide concrete signatures of quantum gravity at play in near-extremal r
 egimes.\n\nhttps://indico.fysik.su.se/event/9576/
LOCATION:Albano 3: 6228 - Mega (22 seats) (Albano Building 3)
URL:https://indico.fysik.su.se/event/9576/
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