Mark B. Wise (Caltech)
Tue. November 27th, 2018, 11:30 am-12:30 pm
Loop induced inflationary non-Gaussianites that give rise to an enhanced galaxy power spectrum at small wave-vectors
Abstract: I outline the calculation of non-Gaussian mass density fluctuations that arise from one-loop Feynman diagrams in a de Sitter background. Their impact on the distribution of galaxies on very large length scales (i.e. l > 200/ h Mpc) is discussed. The role that symmetries of the de Sitter metric play in determining the form of the power spectrum, bi-spectrum and tri-spectrum of primordial curvature perturbations is emphasized.
Host: Fileviez Perez