Title: Primordial Non-Gaussianities and the Distribution of Galaxies on Large Scales
Speaker: Mark Wise, Caltech
Abstract: The inflationary cosmology predicts a primordial two point spatial correlation of the dark matter mass density that is almost scale invariant. This is in agreement with measurements of the microwave background anisotropy. The fluctuations in the dark matter mass density generated during the inflationary era may not be Gaussian. I discuss how such primordial non-Gaussianities can dramatically alter our expectations for the spatial correlations of the number density of galaxies on large length scales (~ greater than 100 Mpc/h). I discuss this phenomena in the context of a very simple inflationary model. It is possible that these dramatic effects will be observed in upcoming large scale surveys like LSST.
Host: De Gouvea
Speaker Schedule
Keywords: Physics, Astronomy, colloquium
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