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SUMMARY:Scalar Induced Gravitational Waves Probing Phase Transitions in th
 e Standard Model and Beyond
DTSTART;VALUE=DATE-TIME:20261108T073000Z
DTEND;VALUE=DATE-TIME:20261108T080000Z
DTSTAMP;VALUE=DATE-TIME:20261023T154558Z
UID:indico-contribution-2978@indico.itp.ac.cn
DESCRIPTION:Speakers: Peizhi Du ()\nScalar induced gravitational waves (SI
 GW) are a powerful probe of dynamics in the Standard Model and BSM models 
 in the early Universe. In particular\, the equation of state and sound spe
 ed have a non-trivial time dependence during phase transitions\, which wil
 l impact the spectrum of induced GWs. In this talk\, I will present a deta
 iled calculation of SIGW in a general time-dependent thermal bath. We deri
 ve general initial conditions for metric perturbations in the superhorizon
  limit\, and explain special features of the GW spectrum associated with p
 hase transitions. I will show that the QCD crossover can leave observable 
 features in the Pulsar Timing Array window\, while BSM phase transitions\,
  such as in composite Higgs models\, can be probed by LISA\, Taiji and Tia
 nQin.\n\nhttps://indico.itp.ac.cn/event/417/contributions/2978/
LOCATION:
URL:https://indico.itp.ac.cn/event/417/contributions/2978/
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