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SUMMARY:ANALOGUE OF SUPERRADIANCE EFFECT IN ACOUSTIC BLACK HOLE IN THE PRE
 SENCE OF DISCLINATION
DTSTART;VALUE=DATE-TIME:20200924T150000Z
DTEND;VALUE=DATE-TIME:20200924T151000Z
DTSTAMP;VALUE=DATE-TIME:20260305T170615Z
UID:indico-contribution-203@indico.uni.edu.pe
DESCRIPTION:Speakers: Geusa Marques (Universidade Federal de Campina Grand
 e)\nAcoustic analogue of a black hole has been a lot studied in the litera
 ture as a concrete laboratory model for probe several aspects of curved sp
 ace quantum field theory.\nIn 1981\, Unruh showed that if a fluid is barot
 ropic and inviscid\,and the flow of the fluid is  irrotational\, the equat
 ion of motion that fluctuation of the velocity potential of acoustic distu
 rbance obeys\, is identical to that of a minimally coupled massless scalar
  field propagating in an effective curved spacetime Loretizian geometry\, 
 which can simulate\nan artificial black hole.\nIn this work we invstigate 
 the possibility of the acoustic analogue of a phenomenon like superradianc
 e\, that is\, the amplification of a sound wave by reflection from the erg
 o-region of a rotating acoustic black hole in the fluid "draining bathtub"
  model in the presence of a desclination be amplified or reduced in agreem
 ent with the value of the deficit angle.\n\nhttps://indico.uni.edu.pe/even
 t/85/contributions/203/
LOCATION:Lima\, Perú
URL:https://indico.uni.edu.pe/event/85/contributions/203/
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