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SUMMARY:Coherent State Description of Gravitational Waves from Binary Blac
 k Holes
DTSTART:20261117T090000Z
DTEND:20261117T100000Z
DTSTAMP:20261104T011600Z
UID:indico-event-9909@indico.fysik.su.se
DESCRIPTION:Speakers: Achintya Sajeendran\n\nSugumi Kanno\, Jiro Soda\, an
 d Akira Taniguchi\nPhys. Rev. Lett. 136\, 061404 (2026)\nQuantum mechanics
  is the fundamental framework of nature\, and gravitational waves from bin
 ary black holes during the inspiral phase should likewise be analyzed quan
 tum mechanically. It is commonly assumed that their classical description 
 corresponds to a coherent state\, so any deviation would signal genuinely 
 quantum nature of gravity. We show that the coherent-state description rep
 roduces classical gravitational waves at leading order\, while next-order 
 effects generate squeezed states of gravitons. For GW150914\, we estimate 
 the squeezing parameter to be ∼10−4. We find that gravitational waves 
 from binary black holes are well described by a coherent state.\n\nhttps:/
 /indico.fysik.su.se/event/9909/
LOCATION:AlbaNova A5:1041 - CoPS grupprum (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/9909/
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