Local and non-local features in the primordial power spectrum and associated non-Gaussianities

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• Dhiraj Kumar Hazra (Harish-Chandra Research Institute, Allahabad)
• Friday 16 September 2011, 13:00-14:00
• Pavilion B Potter Room (B1.19).

If you have a question about this talk, please contact Dr Sebastien Renaux-Petel.

This talk is divided into two parts. In the first half of the talk, I will discuss the generation of localized as well as non-local features (i.e. characteristic and repeated patterns that extend over a wide range of scales) in the inflationary scalar power spectrum that lead to a better fit to the CMB data than the conventional power law spectrum. In the second half, I will discuss the non-Gaussianities that arise in such scenarios, and how they compare with the current observational limits on the parameter f_NL.

This talk is part of the DAMTP Friday GR Seminar series.

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