Searching for oscillations in the primordial power spectrum

Understand

A small deviation from scale invariance in the form of oscillations in the primordial correlation spectra has been predicted by various cosmological models.

• In this paper we review a recently developed method to search for these features in the data in a more effective way.
• By Taylor expanding the small features around the 'background' cosmology, we have shown we are able to improve the search for these features compared to previous analyses.
• In this short paper we will extend that work by combining this method with a multi nested sampler.