English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present three non-parametric Bayesian primordial reconstructions usingPlanck 2018 polarization data: linear spline primordial power spectrumreconstructions, cubic spline inflationary potential reconstructions andsharp-featured primordial power spectrum reconstructions. All three methodsconditionally show hints of an oscillatory feature in the primordial powerspectrum in the multipole range $\ell\sim20$ to $\ell\sim50$, which is to someextent preserved upon marginalization. We find no evidence for deviations froma pure power law across a broad observable window($50\lesssim\ell\lesssim2000$), but find that parameterizations are preferredwhich are able to account for lack of resolution at large angular scales due tocosmic variance, and at small angular scales due to Planck instrument noise.Furthermore, the late-time cosmological parameters are unperturbed by theseextensions to the primordial power spectrum. This work is intended to provide abackground and give more details of the Bayesian primordial reconstruction workfound in the Planck 2018 papers.

Bayesian inflationary reconstructions from Planck 2018 data