Early Dark Energy can Resolve the Hubble Tension.

@article{Poulin2019EarlyDE,
title={Early Dark Energy can Resolve the Hubble Tension.},
author={Vivian Poulin and Tristan L. Smith and Tanvi Karwal and Marc Kamionkowski},
journal={Physical review letters},
year={2019},
volume={122 22},
pages={
221301
}
}
• Published 9 November 2018
• Physics
• Physical review letters
Early dark energy (EDE) that behaves like a cosmological constant at early times (redshifts z≳3000) and then dilutes away like radiation or faster at later times can solve the Hubble tension. In these models, the sound horizon at decoupling is reduced resulting in a larger value of the Hubble parameter H_{0} inferred from the cosmic microwave background (CMB). We consider two physical models for this EDE, one involving an oscillating scalar field and another a slowly rolling field. We perform a…
379 Citations

Figures and Tables from this paper

Clustering and halo abundances in early dark energy cosmological models

• Physics
Monthly Notices of the Royal Astronomical Society
• 2020
Cold Dark Matter with cosmological constant (ΛCDM) cosmological models with early dark energy (EDE) have been proposed to resolve tensions between the Hubble constant $H_0=100\, h$ km ṡ−1Ṁpc−1

Resolving the Hubble tension with new early dark energy

• Physics
• 2020
New Early Dark Energy (NEDE) is a component of vacuum energy at the electron volt scale, which decays in a first order phase transition shortly before recombination [arXiv:1910.10739]. The NEDE

Looking for interactions in the cosmological dark sector

• Physics
Journal of Cosmology and Astroparticle Physics
• 2019
We study observational signatures of non-gravitational interactions between the dark components of the cosmic fluid, which can be either due to creation of dark particles from the expanding vacuum or

Hot new early dark energy

• Physics
Physical Review D
• 2022
New early dark energy (NEDE) makes the cosmic microwave background consistent with a higher value of the Hubble constant inferred from supernovae observations. It is an improvement over the old early

Neutrino-assisted early dark energy: theory and cosmology

• Physics
• 2020
The tension between measurements of the Hubble constant obtained at different redshifts may provide a hint of new physics active in the relatively early universe, around the epoch of matter-radiation

Warm decaying dark matter and the hubble tension

• Physics
Journal of Cosmology and Astroparticle Physics
• 2020
If a fraction of the dark matter is unstable and decays into dark radiation at around the time of matter-radiation equality, it could impact the expansion history of the universe in a way that helps

Why reducing the cosmic sound horizon can not fully resolve the Hubble tension

• Physics
• 2020
The mismatch between the locally measured expansion rate of the universe and the one inferred from the cosmic microwave background measurements by Planck in the context of the standard ΛCDM, known

Constraining early dark energy with large-scale structure

• Physics
• 2020
An axion-like field comprising $\sim 10\%$ of the energy density of the universe near matter-radiation equality is a candidate to resolve the Hubble tension; this is the "early dark energy" (EDE)

Atacama Cosmology Telescope: Constraints on prerecombination early dark energy

• Physics
Physical Review D
• 2022
The EDE model to CMB data from the Atacama Cosmology Telescope (ACT) Data Release 4 is presented, showing that EDE is favored over ΛCDM by these data at roughly 3 σ signiﬁcance, and the accuracy settings used in standard Einstein-Boltzmann codes for theoretical calculations of the primary CMB power spectra are investigated.

Resolving Hubble tension with quintom dark energy model

• Physics
Chinese Physics C
• 2021
Recent low-redshift observations have yielded the present-time Hubble parameter value . This value is approximately 10% higher than the predicted value of , based on Planck's observations of the

References

SHOWING 1-10 OF 116 REFERENCES

Dark energy at early times, the Hubble parameter, and the string axiverse

• Physics
• 2016
Precise measurements of the cosmic microwave background (CMB) power spectrum are in excellent agreement with the predictions of the standard $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ cosmological

Does the Hubble constant tension call for new physics?

• Physics
Journal of Cosmology and Astroparticle Physics
• 2018
The Λ Cold Dark Matter model (ΛCDM) represents the current standard model in cosmology. Within this, there is a tension between the value of the Hubble constant, H0, inferred from local distance

Dynamical dark energy in light of the latest observations

• Physics
Nature Astronomy
• 2017
A flat Friedmann–Robertson–Walker universe dominated by a cosmological constant (Λ) and cold dark matter (CDM) has been the working model preferred by cosmologists since the discovery of cosmic

CMB and BAO constraints for an induced gravity dark energy model with a quartic potential

• Physics
• 2015
We study the predictions for structure formation in an induced gravity dark energy model with a quartic potential. By developing a dedicated Einstein-Boltzmann code, we study self-consistently the

Cosmological constraints on induced gravity dark energy models

• Physics
• 2016
We study induced gravity dark energy models coupled with a simple monomial potential ∝ σn and a positive exponent n. These simple potentials lead to viable dark energy models with a weak dependence

The trouble with $H_0$

• Physics
• 2016
We perform a comprehensive cosmological study of the H0 tension between the direct local measurement and the model-dependent value inferred from the Cosmic Microwave Background. With the recent

Constraining dark energy dynamics in extended parameter space

• Physics
• 2017
Dynamical dark energy has been recently suggested as a promising and physical way to solve the 3.4 sigma tension on the value of the Hubble constant $H_0$ between the direct measurement of Riess et

Vacuum phase transition solves the H 0 tension

• Physics
• 2018
Taking the Planck cosmic microwave background data and the more direct Hubble constant measurement data as unaffected by systematic offsets, the values of the Hubble constant $H_0$ interpreted within

Price of shifting the Hubble constant

• Physics
• 2018
An anisotropic measurement of the baryon acoustic oscillation (BAO) feature fixes the product of the Hubble constant and the acoustic scale $H_0 r_d$. Therefore, regardless of the dark energy

New constraints on the early expansion history of the universe.

• Physics
Physical review letters
• 2013
The Hubble parameter is mapped to a few percent precision, limiting early dark energy and extra relativistic degrees of freedom within a model-independent approach to 2%-16% and 0.71 equivalent neutrino species, respectively (95% C.L.).