University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Monday, November 21st 2016
12:15 pm:
Speaker: Marco Peloso (University of Minnesota)
Subject: Relations between 2- and 3-point correlation functions, and the effect of long wavelength modes on CMB and on Large Scale Structure power spectra

I will review consistency relations between the squeezed bispectrum (three point correlation function of one long-wavelength and two short-wavelength modes) and the power spectrum of the CMB and LSS. These are powerful relations, that are exact at all orders in perturbation theory, based on symmetries, that allow us to probe primordial non-gaussianity, isocurvature modes during inflation, and fundamental principles as Galilean Invariance, and the weak Equivalence Principle.

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