University of Cambridge > Talks.cam > Cosmology Lunch > Oscillations in the primordial bispectrum

Oscillations in the primordial bispectrum

Add to your list(s) Download to your calendar using vCal

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.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity