On the primordial origin of the smoothing excess in the Planck temperature power spectrum in light of LSS data

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dc.contributor.authorBallardini, Mario
dc.contributor.authorFinelli, Fabio
dc.date.accessioned2022-11-10T09:37:01Z
dc.date.available2022-11-10T09:37:01Z
dc.date.issued2022
dc.description.abstractThe Planck DR3 measurements of the temperature and polarization anisotropies power spectra of the cosmic microwave background (CMB) show an excess of smoothing of the acoustic peaks with respect to ΛCDM, often quantified by a phenomenological parameter A L. A specific feature superimposed to the primordial power spectrum has been suggested as a physical solution for this smoothing excess. Here, we investigate the impact of this specific localized oscillation with a frequency linear in the wavenumber, designed to mimic the smoothing of CMB temperature spectrum corresponding to A L ≃ 1.1-1.2 on the matter power spectrum.en_US
dc.identifier.citationBallardini, M., & Finelli, F. (2022). On the primordial origin of the smoothing excess in the Planck temperature power spectrum in light of LSS data. Journal of Cosmology and Astroparticle Physics, (10), 083. https://doi.org/10.1088/1475-7516/2022/10/083en_US
dc.identifier.issn1475-7516
dc.identifier.urihttps://doi.org/10.1088/1475-7516/2022/10/083
dc.identifier.urihttp://hdl.handle.net/10566/8161
dc.language.isoenen_US
dc.publisherIOP Publishingen_US
dc.subjectAstrophysicsen_US
dc.subjectAstronomyen_US
dc.subjectCosmologyen_US
dc.subjectPlanck temperature poweren_US
dc.titleOn the primordial origin of the smoothing excess in the Planck temperature power spectrum in light of LSS dataen_US
dc.typeArticleen_US

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