Initial Conditions in the Effective Field Theory of Inflation

Details Initial Conditions in the Effective Field Theory of Inflation Initial Conditions in the Effective Field Theory of Inflation

2011-09-07

arxiv.org/abs/1109.1562v2

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 2 figures. Extended overview of effective field theory, improved discussion of thermal freeze-out scenario

Scientific paper

Many different models of inflation give rise to the same effective field theory of the inflaton. While effective field theories in flat space provide little information about UV physics, we propose that in inflationary backgrounds a large amount of information can be encoded by the initial conditions of the effective theory. We identify conditions under which this information remains available at late times, e.g. through observation of non-Gaussianities, and introduce a simple model of initial conditions where these conditions are satisfied.

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