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SUMMARY:Audible curvaton: modulated phase transition as the origin of larg
 e-scale curvature perturbations and gravitational wave anisotropies
DTSTART;VALUE=DATE-TIME:20261108T070000Z
DTEND;VALUE=DATE-TIME:20261108T073000Z
DTSTAMP;VALUE=DATE-TIME:20261023T141722Z
UID:indico-contribution-2973@indico.itp.ac.cn
DESCRIPTION:Speakers: Wenyuan Ai (Shanghai Jiao Tong University)\nI will d
 iscuss a new mechanism for generating primordial large-scale curvature per
 turbations and gravitational wave (GW) anisotropies via a first-order phas
 e transition modulated by a light spectator field. The spectator acquires 
 fluctuations during inflation\, which come into play at a post-inflation p
 hase transition by modulating the bubble nucleation rate. Such a modulatio
 n induces spatial variations in the transition time and characteristic bub
 ble scale\, producing the observed amplitude of primordial curvature pertu
 rbations together with sizable\, correlated GW anisotropies. We identify a
  benchmark with GW anisotropies potentially observable by future space-bas
 ed detectors and local primordial non-Gaussianity within reach of next-gen
 eration large-scale-structure surveys.\n\nhttps://indico.itp.ac.cn/event/4
 17/contributions/2973/
LOCATION:
URL:https://indico.itp.ac.cn/event/417/contributions/2973/
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