Oscillations in the primordial bispectrum

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• Daan Meerburg (Amsterdam)
• Monday 07 June 2010, 13:00-14:00
• CMS, Pav.B, CTC Common Room (B1.19).

If you have a question about this talk, please contact Tasos Avgoustidis.

Constraining non-Gaussianities in the Cosmic Microwave Background (CMB) via the bispectrum allows us to the probe the interactions of the field(s) sourcing inflation. As such, the bispectrum can be considered the perfect tool for determining the theory of inflation (the Lagrangian). Although a number of scenarios exists that give rise to a class of bispectra (e.g. local, equilateral) I will discuss 3 models that give rise to a rather unique feature; oscillations. Due to the nature of these features, constraining parameters in the associated theories is rather difficult. Only once we can establish an estimate of the frequency, can we hope to effectively search for such bispectra in the data. I will discuss (several) possibilities to extract this information.

This talk is part of the Cosmology lunch series.

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