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BEGIN:VEVENT
UID:20260518T115457-04-6055lt9Dsh@https://astronomia.uc.cl/2jucext1/institu
 toastrofisica/
DTSTAMP:20260518T155457Z
DESCRIPTION:In this talk\, I will discuss some aspects of non-linear struct
 ure formation. The calculation of the bispectrum usually involves linear p
 hysics on large scales and non-linear (but Newtonian) physics on small sca
 les. However\, in the squeezed limit\, the bispectrum (unlike the power sp
 ectrum) couples large scales with small scales. I will present the calcula
 tion of the non-linear relativistic corrections to the dynamics of dark ma
 tter perturbations. They are of the same order of magnitude\, in the squee
 zed limit\, than a primordial local non-Gaussianity signal. Such signal is
  expected to be within the accuracy of the next generation of LSS surveys.
  https://astronomia.uc.cl/2jucext1/institutoastrofisica/es/instituto/semin
 arios/evento/367-postponed-relativistic-cosmological-large-scale-structure
 s-at-one-loop-dr-clement-stahl-pontificia-universidad-catolica-de-valparai
 so
DTSTART:20191028T161500Z
DTEND:20191028T164500Z
LOCATION:Seminar Room (Instituto de Astrofísica\, Pontificia Universidad Ca
 tólica\, Vicuña Mackenna 4860\, Santiago\, Chile)
SUMMARY:POSTPONED: Relativistic cosmological large scale structures at one-
 loop (Dr. Clément Stahl\; Pontificia Universidad Católica de Valparaíso)
URL:https://astronomia.uc.cl/2jucext1/institutoastrofisica/es/instituto/sem
 inarios/evento/367-postponed-relativistic-cosmological-large-scale-structu
 res-at-one-loop-dr-clement-stahl-pontificia-universidad-catolica-de-valpar
 aiso
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