One spectrum to cure them all: Signature from early Universe solves major anomalies and tensions in cosmology

Abstract

Acoustic peaks in the Cosmic Microwave Background (CMB) temperature spectrum as observed by the Planck satellite appear to be smoother than our expectation from the standard model lensing effect. This anomalous effect can be also mimicked by a spatially closed Universe with a very low value of Hubble constant that consequently aggravates the already existing discordance between cosmological observations. We reconstruct a signature from the early Universe, a particular form of oscillation in the primordial spectrum of quantum fluctuations with a characteristic frequency, that solves all these anomalies. Interestingly, we find this form of the primordial spectrum resolves or substantially subsides, various tensions in the standard model of cosmology in fitting different observations, namely Planck CMB, clustering and weak lensing shear measurements from several large scale structure surveys, local measurements of Hubble constant, and recently estimated age of the Universe from globular clusters. We support our findings phenomenologically, by proposing an analytical form of the primordial spectrum with similar features and demonstrate that it agrees remarkably well with various combinations of cosmological observations. We support further our findings theoretically, by introducing a single scalar field potential for inflation that can generate such a form of the primordial spectrum.

arXiv comment38 pages, 24 figures and 4 tables

References in corpus (72)

• Efficient Computation of CMB anisotropies in closed FRW models
• LSST: from Science Drivers to Reference Design and Anticipated Data Products
• Cosmological parameters from CMB and other data: a Monte-Carlo approach
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The Complete Light-curve Sample of Spectroscopically Confirmed Type Ia Supernovae from Pan-STARRS1 and Cosmological Constraints from The Combined Pantheon Sample
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• Planck 2018 results. X. Constraints on inflation
• A Comprehensive Measurement of the Local Value of the Hubble Constant with 1 km/s/Mpc Uncertainty from the Hubble Space Telescope and the SH0ES Team
• Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• The DESI Experiment Part I: Science,Targeting, and Survey Design
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• H0LiCOW XIII. A 2.4% measurement of $H_0$ from lensed quasars: $5.3\sigma$ tension between early and late-Universe probes
• Planck 2018 results. V. CMB power spectra and likelihoods
• Early Dark Energy Can Resolve The Hubble Tension
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• The Atacama Cosmology Telescope: DR4 Maps and Cosmological Parameters
• Planck evidence for a closed Universe and a possible crisis for cosmology
• Cosmology Intertwined II: The Hubble Constant Tension
• PolyChord: next-generation nested sampling
• Cosmology Intertwined III: $f{\sigma }_8$ and $S_8$
• Oscillations in the CMB from Axion Monodromy Inflation
• Calibration of the Tip of the Red Giant Branch (TRGB)
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Baryon acoustic oscillations with Lyman-$\alpha$ forests
• Inflationary perturbations from a potential with a step
• Early Dark Energy Does Not Restore Cosmological Concordance
• Generation and Characterization of Large Non-Gaussianities in Single Field Inflation
• Features and New Physical Scales in Primordial Observables: Theory and Observation
• Resonant Non-Gaussianity
• A Simple Phenomenological Emergent Dark Energy Model can Resolve the Hubble Tension
• Consistency tests of $\Lambda$CDM from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension
• Arbitrating the $S_8$ discrepancy with growth rate measurements from Redshift-Space Distortions
• Inflation and WMAP three year data: Features have a Future!
• Primordial power spectrum from WMAP
• Early modified gravity in light of the $H_0$ tension and LSS data
• The Atacama Cosmology Telescope: Constraints on Pre-Recombination Early Dark Energy
• Primordial features due to a step in the inflaton potential
• Folded Resonant Non-Gaussianity in General Single Field Inflation
• Scalar-tensor theories of gravity, neutrino physics, and the $H_0$ tension
• Dark Energy at early times and ACT: a larger Hubble constant without late-time priors
• Inferring the Age of the Universe with Globular Clusters
• BINGO: A code for the efficient computation of the scalar bi-spectrum
• The Euclid mission design
• Evidence for Emergent Dark Energy
• Primordial power spectrum from Planck
• Models of the Primordial Standard Clock
• Probing primordial features with future galaxy surveys
• Cosmological constraints on post-Newtonian parameters in effectively massless scalar-tensor theories of gravity
• Wiggly Whipped Inflation
• Determining Model-independent $H_0$ and Consistency Tests
• The trouble beyond $H_0$ and the new cosmic triangles
• Fingerprints of Primordial Universe Paradigms as Features in Density Perturbations
• Oscillations in the inflaton potential: Complete numerical treatment and comparison with the recent and forthcoming CMB datasets
• The Age of the Universe with Globular Clusters: Reducing Systematic Uncertainties
• Testing the Mutual Consistency of the Pantheon and SDSS/eBOSS BAO Data Sets with Gaussian Processes
• Primordial power spectrum: a complete analysis with the WMAP nine-year data
• Primordial features and Planck polarization
• Uncovering the History of Cosmic Inflation from Anomalies in Cosmic Microwave Background Spectra
• Primordial Standard Clock Models and CMB Residual Anomalies
• Planck residuals anomaly as a fingerprint of alternative scenarios to inflation
• Inflation Wars: A New Hope
• Comparing multi-field primordial feature models with the Planck data
• Parameter discordance in Planck CMB and low-redshift measurements: projection in the primordial power spectrum
• Discordances in cosmology and the violation of slow-roll inflationary dynamics
• Probing features in inflaton potential and reionization history with future CMB space observations
• Lensing anomaly and oscillations in the primordial power spectrum
• Changes in the halo formation rates due to features in the primordial spectrum
• Nonlinear Excitations in Inflationary Power Spectra
• Effect of damped oscillations in the inflationary potential

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• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
• Inflation, the Hubble Tension and Early Dark Energy: an alternative overview
• Observational imprints of enhanced scalar power on small scales in ultra slow roll inflation and associated non-Gaussianities
• Ruling Out New Physics at Low Redshift as a solution to the $H_0$ Tension
• Inflationary Potential as seen from Different Angles: Model Compatibility from Multiple CMB Missions
• Transition dynamics in the ${\Lambda }_{\mathrm{s}}$CDM model: Implications for bound cosmic structures
• On the consistency of $\Lambda$CDM with CMB measurements in light of the latest Planck, ACT, and SPT data
• Discordances in cosmology and the violation of slow-roll inflationary dynamics
• ${\Lambda }_{\mathrm{s}}$CDM cosmology: Alleviating major cosmological tensions by predicting standard neutrino properties
• Euclid: The search for primordial features
• New constraints on primordial features from the galaxy two-point correlation function
• Back to the features: assessing the discriminating power of future CMB missions on inflationary models
• Tracking the Multifield Dynamics with Cosmological Data: A Monte Carlo approach
• Testing scale-invariant inflation against cosmological data
• Fingerprints of a Non-Inflationary Universe from Massive Fields
• Effect of damped oscillations in the inflationary potential
• Searching for local features in primordial power spectrum using genetic algorithms
• On the primordial origin of the smoothing excess in the $Planck$ temperature power spectrum in light of LSS data
• Entanglement masquerading in the CMB
• Gravitational waves in a cyclic Universe: resilience through cycles and vacuum state
• A search for super-imposed oscillations to the primordial power spectrum in Planck and SPT-3G 2018 data
• Bayesian inference methodology for Primordial Power Spectrum reconstructions from Large Scale Structure
• Reflected Waves and Quantum Gravity
• Testing $\Lambda$CDM with eBOSS data using a model independent diagnostic