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SUMMARY:Hawking radiation from acoustic black holes in relativistic heavy 
 ion collisions [IIA Colloquium]
DTSTART:20260820T100000Z
DTEND:20260820T110000Z
DTSTAMP:20260825T103200Z
UID:indico-event-461@events.iiap.res.in
CONTACT:colloqm@iiap.res.in
DESCRIPTION:Speakers: Ajit Mohan Srivastava (Institute of Physics\, Bhuban
 eshwar)\n\nAbstractAcoustic black holes are formed when a fluid flowing 
 with subsonic velocities accelerates and becomes supersonic. When the flo
 w is directed from the subsonic to supersonic region\, the surface on whic
 h the normal component of fluid velocity equals the local speed of sound 
 acts as an acoustic horizon. This is because no acoustic perturbation from
  the supersonic region can cross it to reach the subsonic part of the flu
 id. One can show that if the fluid velocity is locally irrotational\, the
  field equations for acoustic perturbations of the velocity potential are
  identical to that of a massless scalar field propagating in a black hole
  background. One\, therefore\, expects Hawking radiation in the form of a 
 thermal spectrum of phonons. We discuss this possibility for the case of r
 elativistic heavy-ion collisions where this Hawking radiation should be ob
 servable in terms of a thermal component in the rapidity dependence of the
  transverse momentum distribution of detected particles. We also discuss t
 he case of hydrodynamic flow of electrons in condensed matter systems whe
 re the resulting Hawking radiation will appear in terms of current fluctu
 ations. \n\nhttps://events.iiap.res.in/event/461/
LOCATION:IIA Council Room
URL:https://events.iiap.res.in/event/461/
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