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SUMMARY:The Gravitational-Wave Aspect of PBH-catalyzed Phase Transitions
DTSTART:20250908T010000Z
DTEND:20250908T030000Z
DTSTAMP:20260905T231200Z
UID:indico-event-1035@indico.ibs.re.kr
DESCRIPTION:Speakers: Jiahang Zhong (UCST)\n\nPrimordial black holes (PBHs
 ) can catalyze first-order phase transitions (FOPTs) in their vicinity\, p
 otentially modifying the gravitational wave (GW) signals generated during 
 these transitions. In this talk\, I will introduce the catalytic effect of
  PBHs and discuss how it can consequently modify the phase transition GWs 
 spectrum. Generally\, PBHs induce two key effects. Firstly\, they promote 
 the formation of larger bubbles by enabling nucleation earlier than backgr
 ound\, which tends to amplify the resultant gravitational waves. Secondly\
 , PBHs accelerate the phase transition process\, an effect which can lead 
 to suppression of the GW signal. At the end of the talk\, I will discuss t
 he implications of PBHs from phase transition interpretations of the PTA (
 Pulsar Timing Array) signals. \n\nhttps://indico.ibs.re.kr/event/1035/
URL:https://indico.ibs.re.kr/event/1035/
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