Constraints on Inflation from the BOSS Galaxy Survey

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• Giovanni Cabass - Institute for Advanced Study
• Monday 16 May 2022, 13:00-14:00
• CMS, Pav. B, CTC Common Room (B1.19) [Potter Room].

If you have a question about this talk, please contact Francesco.

Zoom link: https://zoom.us/j/95294263063; Link to slides: https://www.dropbox.com/sh/9wontsndxxy33xm/AADqD09rMiwT59lm5x6WfTWAa?dl=0.

Non-local primordial non-Gaussianity is a smoking gun of interactions in single-field inflationary models, and can be written as a combination of the equilateral and orthogonal templates. I present the first constraints on these templates from the redshift-space galaxy power spectra and bispectra of the Baryon Oscillation Spectroscopic Survey (BOSS) data. These are the first such measurements independent of the cosmic microwave background fluctuations. I discuss how the constraints on these templates can be translated to bounds on the coefficients of the Lagrangian of single-clock inflation. Then, I present the constraints on primordial non-Gaussianity of the local type, typical of multi-field models of inflation, from the same data.

This talk is part of the Cosmology Lunch series.

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