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dc.contributor.authorBeutler, Florianen
dc.contributor.authorBiagetti, Matteoen
dc.contributor.authorGreen, Danielen
dc.contributor.authorSlosar, Anžeen
dc.contributor.authorWallisch, Benjaminen
dc.date.accessioned2020-01-16T00:30:41Z
dc.date.available2020-01-16T00:30:41Z
dc.identifier.issn2643-1564
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/300928
dc.description.abstractSharp features in the primordial power spectrum are a powerful window into the inflationary epoch. To date, the cosmic microwave background (CMB) has offered the most sensitive avenue to search for these signatures. In this paper, we demonstrate the power of large-scale structure observations to surpass the CMB as a probe of primordial features. We show that the signatures in galaxy surveys can be separated from the broadband power spectrum and are as robust to the nonlinear evolution of matter as the standard baryon acoustic oscillations. As a result, analyses can exploit a significant range of scales beyond the linear regime available in the data sets. We develop a feature search for large-scale structure, apply it to the final data release of the Baryon Oscillation Spectroscopic Survey and find new bounds on oscillatory features that exceed the sensitivity of Planck for a significant range of frequencies. Moreover, we forecast that the next generation of galaxy surveys, such as DESI and Euclid, will be able to improve current constraints by up to an order of magnitude over an expanded frequency range.
dc.languageenen
dc.publisherAmerican Physical Society
dc.rightsAttribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.titlePrimordial features from linear to nonlinear scalesen
dc.typeArticle
prism.issueIdentifier3en
prism.number033209en
prism.publicationNamePhysical Review Researchen
prism.volume1en
dc.identifier.doi10.17863/CAM.48003
dcterms.dateAccepted2019-10-23en
rioxxterms.versionofrecord10.1103/physrevresearch.1.033209en
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2019-10-23en
dc.contributor.orcidBeutler, Florian [0000-0003-0467-5438]
dc.contributor.orcidBiagetti, Matteo [0000-0002-5097-479X]
dc.contributor.orcidGreen, Daniel [0000-0001-5496-0347]
dc.contributor.orcidSlosar, Anže [0000-0002-8713-3695]
dc.contributor.orcidWallisch, Benjamin [0000-0001-5713-1720]
dc.identifier.eissn2643-1564
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/P020259/1)
pubs.funder-project-idSTFC (ST/R002452/1)
pubs.funder-project-idSTFC (ST/R00689X/1)
cam.issuedOnline2019-12-27en


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International