Implication of the Hubble tension for the primordial Universe in light of recent cosmological data

Abstract

In prerecombination resolutions of the Hubble tension, such as early dark energy, new physics before recombination shifts the values of relevant cosmological parameters so that the models can fit with cosmic microwave background and baryon acoustic oscillations observations as well as $\Lambda$CDM does. In this paper, we clarify how the parameter shifts are related with $\delta H_0$, particularly we find the shift of primordial scalar spectral index scales as $\delta n_s\simeq 0.4\frac{\delta H_0}{H_0}$ by performing the Monte Carlo Markov chain analysis with the Planck2018+BAO+Pantheon+R19+Keck Array/BICEP dataset. A novel point of our result is that if the current $H_0$ measured locally is correct, complete resolution of the Hubble tension seems to be pointing to a scale invariant Harrison-Zeldovich spectrum, i.e. $n_s=1$ for $H_0\sim 73$km/s/Mpc.

15 pages, 3 figures; references added, matched published version in PRD

References in corpus (17)

• In the Realm of the Hubble tension $-$ a Review of Solutions
• 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 trouble with $H_0$
• The Expansion of the Universe is Faster than Expected
• On the Hubble constant tension in the SNe Ia Pantheon sample
• Early modified gravity in light of the $H_0$ tension and LSS data
• Analyzing the $H_0$ tension in $F(R)$ gravity models
• Recombination-independent determination of the sound horizon and the Hubble constant from BAO
• Modelling and testing the equation of state for (Early) dark energy
• Exploring Early Dark Energy solution to the Hubble tension with Planck and SPTPol data
• Early dark energy in $k$-essence
• No H_0 Assistance from Assisted Quintessence
• Sources of $H_0$-tensions in dark energy scenarios
• $\alpha$ attractors in Quintessential Inflation motivated by Supergravity
• Quintessential inflation and cosmological seesaw Mechanism: reheating and observational constraints
• The role of CMB spectral distortions in the Hubble tension: a proof of principle

Cited by in corpus (47)

• Challenges for $\Lambda$CDM: An update
• 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
• On the evolution of the Hubble constant with the SNe Ia Pantheon Sample and Baryon Acoustic Oscillations: a feasibility study for GRB-cosmology in 2030
• Inflationary interpretation of the stochastic gravitational wave background signal detected by pulsar timing array experiments
• Implications for the Hubble tension from the ages of the oldest astrophysical objects
• Dark energy in light of the early JWST observations: case for a negative cosmological constant?
• Towards early dark energy and $n_s$=1 with Planck, ACT and SPT
• Resolving the Hubble tension with Early Dark Energy
• Negative cosmological constant in the dark energy sector: tests from JWST photometric and spectroscopic observations of high-redshift galaxies
• Testing AdS early dark energy with Planck, SPTpol and LSS data
• A double take on early and interacting dark energy from JWST
• Towards hybrid inflation with $n_s=1$ in light of Hubble tension and primordial gravitational waves
• Combining pre- and post-recombination new physics to address cosmological tensions: case study with varying electron mass and sign-switching cosmological constant
• Return of Harrison-Zeldovich spectrum in light of recent cosmological tensions
• Very Hairy Inflation
• Broken blue-tilted inflationary gravitational waves: a joint analysis of NANOGrav 15-year and BICEP/Keck 2018 data
• Inflation, the Hubble Tension and Early Dark Energy: an alternative overview
• Cosmological implications of $n_s\approx 1$ in light of the Hubble tension
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• Testing dark energy after pre-recombination early dark energy
• Anisotropic cosmic optical background bound for decaying dark matter in light of the LORRI anomaly
• Multiple transitions in vacuum dark energy and $H_0$ tension
• On the consistency of $\Lambda$CDM with CMB measurements in light of the latest Planck, ACT, and SPT data
• Cosmological constraints on early dark energy from the full shape analysis of eBOSS DR16
• Improved constraint on primordial gravitational waves in light of the Hubble tension and BICEP/Keck
• Impact of the Hubble tension on the $r$-$n_s$ contour
• No-go guide for the Hubble tension: late-time or local-scale new physics
• Cosmic variance of $H_0$ in light of forthcoming high-redshift surveys
• Generating cosmological perturbations in non-singular Horndeski cosmologies
• Testing the $n_s-H_0$ scaling relation with Planck-independent CMB data
• D-term inflation in braneworld models: Consistency with cosmic-string bounds and early-time Hubble tension resolving models
• Reconciling early dark energy with a Harrison-Zeldovich spectrum
• Testing scale-invariant inflation against cosmological data
• Non-oscillating Early Dark Energy and Quintessence from Alpha-Attractors
• Implication of island for inflation and primordial perturbations
• Does the fraction of dark matter diminish with early dark energy?
• Big bang nucleosynthesis and early dark energy in light of the EMPRESS $Y_p$ results and the $H_0$ tension
• A visual tool for assessing tension-resolving models in the $H_0$-${\sigma }_8$ plane
• Power-law Inflation Satisfies Penrose's Weyl Curvature Hypothesis
• Can the sound horizon-free measurement of $H_0$ constrain early new physics?
• One Extension to Explain Them All, One Scale-Invariant Spectrum to Test Them All, and in One Model Bind Them
• Gravitational waves in a cyclic Universe: resilience through cycles and vacuum state
• $\Lambda$CDM and early dark energy in latent space: a data-driven parametrization of the CMB temperature power spectrum
• Harrison-Zeldovich attractor: From Planck to ACT results
• New tests of dark sector interactions from the full-shape galaxy power spectrum
• Resolving the Hubble Tension in the Early Dark Energy Framework with JWST and DESI Data