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SUMMARY:Non-modal effects: Transient Superradiance
DTSTART:20260219T110000Z
DTEND:20260219T130000Z
DTSTAMP:20260702T041054Z
UID:5e0fb181-6e9c-4c78-b2a6-c28db904119f
SEQUENCE:1
CREATED:20260216T141709Z
DESCRIPTION: Black hole quasinormal modes are governed by a non-normal evo
 lution operator with respect to a natural choice of inner product\, and th
 us do not form a complete and orthogonal basis. This allows linear perturb
 ations around a black hole spacetime to potentially exhibit large-amplitud
 e growth at finite time\, despite asymptotic decay at later times. In this
  talk\, I will exemplify this mechanism by discussing a transient form of 
 superradiance\, drawing similarities to the transition to turbulence in Na
 vier-Stokes shear flows.  
LAST-MODIFIED:20260216T141709Z
LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building
URL:http://df.vps.tecnico.ulisboa.pt/en/events/non-modal-effects-transient
 -superradiance/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="4kis5"> Black hole quasino
 rmal modes are governed by a non-normal evolution operator with respect to
  a natural choice of inner product\, and thus do not form a complete and o
 rthogonal basis. This allows linear perturbations around a black hole spac
 etime to potentially exhibit large-amplitude growth at finite time\, despi
 te asymptotic decay at later times. In this talk\, I will exemplify this m
 echanism by discussing a transient form of superradiance\, drawing similar
 ities to the transition to turbulence in Navier-Stokes shear flows.  </p>
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