Alleviating the Tension in the Cosmic Microwave Background Using Planck-Scale Physics

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dc.contributor.authorAshtekar, A.
dc.contributor.authorGupt, B.
dc.contributor.authorJeong, D.
dc.contributor.authorSreenath, V.
dc.date.accessioned2026-02-05T09:28:25Z
dc.date.issued2020
dc.description.abstractCertain anomalies in the CMB bring out a tension between the six-parameter flat ?CDM model and the CMB data. We revisit the PLANCK analysis with loop quantum cosmology (LQC) predictions and show that LQC alleviates both the large-scale power anomaly and the tension in the lensing amplitude. These differences arise because, in LQC, the primordial power spectrum is scale dependent for small k, with a specific power suppression. We conclude with a prediction of larger optical depth and power suppression in the B-mode polarization power spectrum on large scales. © 2020 American Physical Society.
dc.identifier.citationPhysical Review Letters, 2020, 125, 5, pp. -
dc.identifier.issn319007
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.125.051302
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/23810
dc.publisherAmerican Physical Society subs@aip.org;revtex@aps.org;prx@aps.org;prxtex@aps.org;help@aps.org;prb@aps.org
dc.subjectPower spectrum
dc.subjectB-Mode polarization
dc.subjectCosmic microwave backgrounds
dc.subjectLarge-scales
dc.subjectLoop quantum cosmologies
dc.subjectOptical depth
dc.subjectPlanck scale
dc.subjectSpecific power
dc.subjectCosmology
dc.subjectarticle
dc.subjectcosmos
dc.subjectmicrowave radiation
dc.subjectoptical depth
dc.subjectphysics
dc.subjectpolarization
dc.subjectpower spectrum
dc.subjectprediction
dc.subjecttension
dc.titleAlleviating the Tension in the Cosmic Microwave Background Using Planck-Scale Physics

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