Searching for oscillations in the primordial power spectrum. I. Perturbative approach
Searching for oscillations in the primordial power spectrum. I. Perturbative approach
In this first of two papers, we present a new method for searching for oscillatory features in the primordial power spectrum. A wide variety of models predict these features in one of two different flavors: logarithmically spaced oscillations and linearly spaced oscillations. The proposed method treats the oscillations as perturbations …