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New information in the wavefunction of primordial perturbations

Eva Silverstein

Modern cosmological data enables extensive tests of the degrees of freedom and interactions operating nearly 14 billion years ago. We will show how  a basic feature of quantum field theory -- enhancement of multipoint correlations -- enables a substantial improvement on our ability to constrain this early universe dynamics.  The talk will start by reviewing the relevant early universe physics, focusing on inflationary cosmology.  Then we will summarize in simple terms an ongoing development in quantum field theory concerning the size and structure of many-point correlations, noting a variety of applications.  Returning to cosmology, we will derive a parametric improvement on the discovery potential and constraining power of primordial non-Gaussianity which is accessible using existing CMB data.

Speaker: Eva Silverstein, Stanford

Monday, 11/06/17


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Varian Physics Building

382 Via Pueblo Mall
Room 355
Stanford, CA 94305