Quintessential early dark energy

Abstract

We introduce a unified model of early and late dark energy. We call it {\it quintessential early dark energy} model where early and late dark energy are explained by a single scalar field {\it i.e.}, two different energy scales are related by a single scalar field potential. To achieve this we introduce the modified steep exponential potential, which is chosen phenomenologically. This potential has a hilltop nature during the early time which consists of a flat region followed by a steep region. This nature of the potential plays a crucial role in achieving early dark energy solution. During recent time, the potential can almost mimic the cosmological constant which can result into late time acceleration. But, at the perturbation level the potential shows significant difference with the $\Lambda$CDM model. We also constrain and compare the models for steep exponential, modified steep exponential, axionlike and power law potentials by using the available background cosmological data from CMB, BAO (including DESI DR1 2024), supernovae (Pantheon$+$, DESY5 and Union3) and Hubble parameter measurements. Even after the presence of required EDE solution in all four potentials we don't get any significant improvement in the value of $H_0$. The maximum improvement we get in the present value of Hubble parameter compared to the standard $\Lambda$CDM model is for the axionlike potential. For other potentials the constraints are similar to the $\Lambda$CDM model. We also see that the data prefers $\Lambda$CDM model over the considered scalar field models at least for the data combinations with Pantheon$+$ and Union3.

30 pages, 5 tables and 11 figures, more analysis and references added, accepted in Physics of the Dark Universe for publication

References in corpus (65)

• emcee: The MCMC Hammer
• Planck 2013 results. XVI. Cosmological parameters
• Dynamics of dark energy
• Modified Gravity and Cosmology
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Cosmology and the Fate of Dilatation Symmetry
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• 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
• Axion Cosmology
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• The Pantheon+ Analysis: Cosmological Constraints
• DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations
• Early Dark Energy Can Resolve The Hubble Tension
• The Pantheon+ Analysis: The Full Dataset and Light-Curve Release
• Challenges for $\Lambda$CDM: An update
• Everything You Always Wanted To Know About The Cosmological Constant Problem (But Were Afraid To Ask)
• The trouble with $H_0$
• The Hubble Hunter's Guide
• New physics in light of the $H_0$ tension: an alternative view
• Dynamical systems applied to cosmology: dark energy and modified gravity
• A search for ultra-light axions using precision cosmological data
• Oscillating scalar fields and the Hubble tension: a resolution with novel signatures
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• Cosmological implications of ultra-light axion-like fields
• Baryon acoustic oscillations from the complete SDSS-III Ly$\alpha$-quasar cross-correlation function at $z=2.4$
• Acoustic Dark Energy: Potential Conversion of the Hubble Tension
• DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars
• DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest
• $H_0$ from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method
• Resolving the Hubble Tension with New Early Dark Energy
• Tension and constraints on modified gravity parametrizations of $G_{\text{eff}}(z)$ from growth rate and Planck data
• New Early Dark Energy
• Thawing quintessence with a nearly flat potential
• Distance Priors from Planck Final Release
• Consistency tests of $\Lambda$CDM from the early integrated Sachs-Wolfe effect: Implications for early-time new physics and the Hubble tension
• The clustering of the SDSS-IV extended Baryon Oscillation Spectroscopic Survey DR14 quasar sample: measurement of the growth rate of structure from the anisotropic correlation function between redshift 0.8 and 2.2
• DESI 2024: Reconstructing Dark Energy using Crossing Statistics with DESI DR1 BAO data
• Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
• Rock 'n' Roll Solutions to the Hubble Tension
• Interacting Dark Energy after DESI Baryon Acoustic Oscillation measurements
• Assessing observational constraints on dark energy
• Thermal Friction as a Solution to the Hubble Tension
• Quintessential inflation with canonical and noncanonical scalar fields and Planck 2015 results
• Observational constraints on successful model of quintessential Inflation
• A comprehensive comparison of cosmological models from latest observational data
• Union Through UNITY: Cosmology with 2,000 SNe Using a Unified Bayesian Framework
• Quantifying Scalar Field Dynamics with DESI 2024 Y1 BAO measurements
• Probing the imprint of interacting dark energy on very large scales
• Runaway potentials in warm inflation satisfying the swampland conjectures
• A review of Quintessential Inflation
• Quintessential inflation: A tale of emergent and broken symmetries
• Unified early and late Universe cosmology through dissipative effects in steep quintessential inflation potential models
• Quintessential Inflation in a thawing realization
• The Dark Energy Survey: Cosmology Results With ~1500 New High-redshift Type Ia Supernovae Using The Full 5-year Dataset
• Relic gravitational waves from Quintessential Inflation
• Thermal Friction as a Solution to the Hubble and Large-Scale Structure Tensions
• Dark energy in light of recent DESI BAO and Hubble tension
• Tachyon inflation with steep potentials
• A comparison between axion-like and power law potentials in cosmological background
• Dynamical System Analysis for Steep Potentials
• Stability analysis of warm quintessential dark energy model
• Scaling solutions as Early Dark Energy resolutions to the Hubble tension
• First and second order cosmological perturbations in light mass Galileon models
• Accelerated inference on accelerated cosmic expansion: New constraints on axion-like early dark energy with DESI BAO and ACT DR6 CMB lensing
• Cosmological model selection

Cited by in corpus (5)

• Constraining deviations from $\Lambda$CDM in the Hubble expansion rate
• Cosmological implications of tracker scalar fields: Testing the evidence for dynamical dark energy with recent data
• Cosmological constraints on the big bang quantum cosmology model
• Thermodynamic reconstruction in observationally constrained dynamical dark energy models
• Inflation from a generalized exponential plateau: towards extra suppressed tensor-to-scalar ratios