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BEGIN:VEVENT
UID:20260518T075304-04-8607Kkbg4G@https://astronomia.uc.cl/2jucext1/institu
 toastrofisica/
DTSTAMP:20260518T115304Z
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/instituto/seminari
 os/evento/367-postponed-relativistic-cosmological-large-scale-structures-a
 t-one-loop-dr-clement-stahl-pontificia-universidad-catolica-de-valparaiso
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/instituto/semina
 rios/evento/367-postponed-relativistic-cosmological-large-scale-structures
 -at-one-loop-dr-clement-stahl-pontificia-universidad-catolica-de-valparais
 o
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