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SUMMARY:Benjamin Wallisch (IAS & UCSD)
DTSTART:20200501T220000Z
DTEND:20200501T230000Z
DTSTAMP:20260423T020952Z
UID:CosmoConB/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CosmoConB/4/
 ">Constraining Primordial Features Beyond the Linear Regime</a>\nby Benjam
 in Wallisch (IAS & UCSD) as part of CosmoConβ - Cosmology from Home\n\n\n
 Abstract\nCharacterizing the nature of inflation is one of the main challe
 nges in cosmology. Oscillatory features in the power spectrum of primordia
 l density fluctuations are an important signature of inflationary physics 
 beyond its simplest incarnations. In this talk\, I will show that we can r
 eliably search for these imprints in the distribution of galaxies in the l
 ate-time universe. This is based on the insight that the impact of nonline
 ar evolution of the density fluctuations is a tractable problem. Consequen
 tly\, we can use the full statistical power of current and future galaxy s
 urveys to search for these inflationary imprints. By generalizing the stan
 dard BAO analysis\, we infer the most stringent constraints on primordial 
 features to date from the BOSS DR12 dataset.\n\nVideo of Talk: <a href="ht
 tps://www.youtube.com/watch?v=jVRXaeHSk9o">https://www.youtube.com/watch?v
 =jVRXaeHSk9o</a>\n\nRelevant Paper: <a href="https://arxiv.org/abs/1906.08
 758">[1906.08758] Primordial Features from Linear to Nonlinear Scales</a>\
 , by Florian Beutler\, Matteo Biagetti\, Daniel Green\, Anže Slosar\, Ben
 jamin Wallisch\n
LOCATION:https://researchseminars.org/talk/CosmoConB/4/
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