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SUMMARY:Induced Gravitational Waves: From Gauge Issue to Primordial Black 
 Hole Dark Matter
DTSTART;VALUE=DATE-TIME:20261026T071500Z
DTEND;VALUE=DATE-TIME:20261026T074000Z
DTSTAMP;VALUE=DATE-TIME:20261024T224041Z
UID:indico-contribution-3021@indico.itp.ac.cn
DESCRIPTION:Speakers: Shi Pi ()\nScalar-induced gravitational waves provid
 e a unique probe of enhanced primordial fluctuations and primordial black 
 holes (PBHs). I will first address the longstanding gauge issue in the def
 inition of induced gravitational waves\, presenting a gauge-invariant calc
 ulation of the observable second-order gravitational-wave strain. I will t
 hen discuss the induced gravitational-wave signal associated with PBH dark
  matter in space-based detectors. We find that Taiji can probe the entire 
 remaining asteroid-mass window in which PBHs may constitute dark matter\, 
 with a signal-to-noise ratio up to 10^{3~4}.\n\nhttps://indico.itp.ac.cn/e
 vent/427/contributions/3021/
LOCATION:
URL:https://indico.itp.ac.cn/event/427/contributions/3021/
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