Physics - High Energy Phenomenology Seminar

Back to Listing

High Energy Phenomenology Seminar: Giovanni Cabass (IAS) "Constraints on Single-Field Inflation from the BOSS Galaxy Survey"

Event Type
Seminar/Symposium
Sponsor
Department of Physics
Location
Via ZOOM
Virtual
wifi event
Date
Feb 25, 2022   12:00 pm  
Speaker
Giovanni Cabass
Contact
Brandy Koebbe
E-Mail
BKOEBBE@ILLINOIS.EDU
Views
11

Non-local primordial non-Gaussianity (NLPNG) 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 analysis includes all necessary nonlinear corrections generated by NLPNG, and varies all relevant cosmological and nuisance parameters in a global fit to the data. I discuss how the constraints on these templates can be translated to bounds on the coefficients of the Lagrangian of single-clock inflation.

 
link for robots only