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SUMMARY:Family tree decomposition of cosmological correlators - Zhong-Zhi 
 Xianyu (Tsinghua U.)
DTSTART:20240614T090000Z
DTEND:20240614T100000Z
UID:TALK217081@talks.cam.ac.uk
CONTACT:Dr  Dong-Gang Wang
DESCRIPTION:The correlation functions of large-scale fluctuations are cruc
 ial observables in modern cosmology. There have been considerable efforts 
 in the analytical study of cosmological correlators in recent years. In th
 is talk\, I will introduce the basic structure of cosmological correlators
  and several analytical methods we recently proposed for computing them. I
 n particular\, I will describe the family tree decomposition of arbitrary 
 nested time integrals. With this method\, we largely solve the problem of 
 analytical computation of massive tree amplitudes in dS and conformal scal
 ar tree amplitudes in a power-law FRW universe.
LOCATION:CMS\, Pav. B\, MR9 (B0.09) 
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