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dc.contributor.authorSchutz, Katelin
dc.contributor.authorSfakianakis, Evangelos I.
dc.contributor.authorKaiser, David I.
dc.date.accessioned2014-08-25T13:21:21Z
dc.date.available2014-08-25T13:21:21Z
dc.date.issued2014-03
dc.date.submitted2013-12
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/1721.1/89005
dc.description.abstractRecent measurements by the Planck experiment of the power spectrum of temperature anisotropies in the cosmic microwave background radiation reveal a deficit of power in low multipoles compared to the predictions from best-fit ΛCDM cosmology. If the low-ℓ anomaly persists after additional observations and analysis, it might be explained by the presence of primordial isocurvature perturbations in addition to the usual adiabatic spectrum, and hence may provide the first robust evidence that early-Universe inflation involved more than one scalar field. In this paper we explore the production of isocurvature perturbations in nonminimally coupled two-field inflation. We find that this class of models readily produces enough power in the isocurvature modes to account for the Planck low-ℓ anomaly, while also providing excellent agreement with the other Planck results.en_US
dc.description.sponsorshipUnited States. Dept. of Energy (Contract DE-FG02-05ER41360)en_US
dc.description.sponsorshipCameron and Hayden Lord Foundation (Undergraduate Research Fellowship)en_US
dc.description.sponsorshipMassachusetts Institute of Technology. Undergraduate Research Opportunities Programen_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevD.89.064044en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAmerican Physical Societyen_US
dc.titleMultifield inflation after Planck: Isocurvature modes from nonminimal couplingsen_US
dc.typeArticleen_US
dc.identifier.citationSchutz, Katelin, Evangelos I. Sfakianakis, and David I. Kaiser. “Multifield Inflation after Planck: Isocurvature Modes from Nonminimal Couplings.” Phys. Rev. D 89, no. 6 (March 2014). © 2014 American Physical Societyen_US
dc.contributor.departmentMassachusetts Institute of Technology. Center for Theoretical Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Program in Science, Technology and Societyen_US
dc.contributor.mitauthorSchutz, Katelinen_US
dc.contributor.mitauthorSfakianakis, Evangelos I.en_US
dc.contributor.mitauthorKaiser, David I.en_US
dc.relation.journalPhysical Review Den_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsSchutz, Katelin; Sfakianakis, Evangelos I.; Kaiser, David I.en_US
dc.identifier.orcidhttps://orcid.org/0000-0002-5054-6744
mit.licensePUBLISHER_POLICYen_US


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