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SUMMARY:Audible curvaton: modulated phase transition as the origin of larg
 e-scale curvature perturbations and gravitational wave anisotropies
DTSTART:20261102T080000Z
DTEND:20261102T090000Z
DTSTAMP:20261030T174600Z
UID:indico-event-5388@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Wenyuan Ai (Tsung-Dao Lee Institute\, Shanghai Jiao 
 Tong University)\n\nAbstract: We propose a post-inflationary first-order p
 hase transition modulated by a light spectator field as the origin of prim
 ordial large-scale curvature perturbations. Spectator fluctuations acquire
 d during inflation modulate the bubble nucleation history\, generating cur
 vature perturbations together with correlated intrinsic gravitational-wave
  (GW) anisotropies. We show that this mechanism can reproduce the observed
  amplitude of curvature perturbations while producing a loud stochastic GW
  background in the frequency bands of space-based detectors such as LISA\,
  Taiji\, and TianQin. A concrete benchmark yields strongly enhanced intrin
 sic GW anisotropies and a local primordial non-Gaussianity signal within r
 each of future large-scale-structure surveys.\nBiography: Wenyuan Ai is a
 n associate professor (tenure-track) at the Tsung-Dao Lee Institute (TDLI)
 \, Shanghai Jiao Tong University. He received his Ph.D. degree from the Te
 chnical University of Munich in 2019. He carried out postdoctoral research
  at UC Louvian (CP3\, 2019-2021)\, King's College London (TPPC\, 2021-2024
 )\, and Austrian Academy of Sciences (HEPHY\, 2024-2026). He joined TDLI i
 n February 2026. His research interests are mainly in quantum field theory
  and the early Universe\, in particular cosmological phase transitions\, t
 he strong CP problem\, non-perturbative and non-equilibrium QFT.\nOnline L
 ink: https://meeting.tencent.com/dm/t5ibrIFvuenQ\nTencent Meeting ID: 863 
 955 019\nNo passcode\n \n \n\nhttps://indico-tdli.sjtu.edu.cn/event/5388
 /
URL:https://indico-tdli.sjtu.edu.cn/event/5388/
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