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Predictions from multiple-field inflation

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Over the last few years there has been substantial effort in determining the correlation functions produced by an epoch of primordial inflation. Each correlation function depends on multiple energy scales, and the principal difficulty is to calculate their behaviour where these scales exhibit large hierarchies. I will outline recent progress in performing these calculations and explain how it leads to an intuitive picture which can be used to understand the time-dependence of the inflationary non-gaussianity.

This talk is part of the Cosmology lunch series.

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