Exploring cosmological imprints of phantom crossing with dynamical dark energy in Horndeski gravity

Abstract

In the current era of precision cosmology, the persistence of cosmological tensions, most notably the Hubble tension and the $S_8$ tension, challenges the standard $\Lambda$CDM model. To reconcile these tensions via late-time modifications to expansion history, various features such as phantom crossing in the dark energy equation of state, a negative energy density at high redshifts, etc., are favoured. However, these scenarios cannot be realized within the framework of GR without introducing ghost or gradient instabilities. In this work, we investigate a dynamical dark energy scenario within the framework of Horndeski gravity, incorporating nonminimal coupling to gravity and self-interactions. We highlight that the model can exhibit novel features like phantom crossing and negative dark energy densities at high redshifts without introducing any instabilities. For this specific Horndeski model, we perform a comprehensive analysis of the background evolution along with the effects on perturbations, examining observables like growth rate, matter and CMB power spectrum. To check the consistency of the model with the observational data, we employ MCMC analysis using BAO/$f{\sigma }_8$, Supernovae, and CMB data. While the model does not outperform the standard $\Lambda$CDM framework in a combined likelihood analysis, there remains a preference for non-zero values of the model parameters within the data. This suggests that dynamical dark energy scenarios, particularly those with non-minimal couplings, merit further exploration as promising alternatives to GR, offering rich phenomenology that can be tested against a broader range of current and upcoming observational datasets.

16 pages, 8 figures, 1 table

References in corpus (60)

• Modified Gravity and Cosmology
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The 6dF Galaxy Survey: Baryon Acoustic Oscillations and the Local Hubble Constant
• Accelerating Universes with Scaling Dark Matter
• 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
• The Cosmic Linear Anisotropy Solving System (CLASS) II: Approximation schemes
• In the Realm of the Hubble tension $-$ a Review of Solutions
• 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
• Generalized G-inflation: Inflation with the most general second-order field equations
• Challenges for $\Lambda$CDM: An update
• Conservative Constraints on Early Cosmology: an illustration of the Monte Python cosmological parameter inference code
• Dark Energy after GW170817 and GRB170817A
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• Planck 2018 results. VIII. Gravitational lensing
• Cosmological implications of baryon acoustic oscillation (BAO) measurements
• The Hubble Hunter's Guide
• Imperfect Dark Energy from Kinetic Gravity Braiding
• Can dark energy evolve to the Phantom?
• Horndeski theory and beyond: a review
• A population of red candidate massive galaxies ~600 Myr after the Big Bang
• The $H_0$ Olympics: A fair ranking of proposed models
• Maximal freedom at minimum cost: linear large-scale structure in general modifications of gravity
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Baryon acoustic oscillations with Lyman-$\alpha$ forests
• Seven hints that early-time new physics alone is not sufficient to solve the Hubble tension
• Model independent evidence for dark energy evolution from Baryon Acoustic Oscillations
• Conditions for the cosmological viability of the most general scalar-tensor theories and their applications to extended Galileon dark energy models
• Dark energy in Horndeski theories after GW170817: A review
• Why reducing the cosmic sound horizon alone can not fully resolve the Hubble tension
• On the use of the local prior on the absolute magnitude of Type Ia supernovae in cosmological inference
• Spectroscopic Confirmation of CEERS NIRCam-selected Galaxies at $\mathbf{z}\simeq 8-10$
• hi_class: Horndeski in the Cosmic Linear Anisotropy Solving System
• Graduated dark energy: Observational hints of a spontaneous sign switch in the cosmological constant
• 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
• Third order equations of motion and the Ostrogradsky instability
• Is Local $H_0$ At Odds With Dark Energy EFT?
• Evolution of dark energy reconstructed from the latest observations
• Beyond $\Lambda$CDM with Low and High Redshift Data: Implications for Dark Energy
• Gradient instability for w < -1
• 2021-$H_0$ Odyssey: Closed, Phantom and Interacting Dark Energy Cosmologies
• Relaxing cosmological tensions with a sign switching cosmological constant: Improved results with Planck, BAO, and Pantheon data
• Dark energy in light of the early JWST observations: case for a negative cosmological constant?
• Evidence for suppression of structure growth in the concordance cosmological model
• Do cosmological observations allow a negative $\Lambda$?
• Constraints on scalar-tensor theory of gravity by the recent observational results on gravitational waves
• Omnipotent dark energy: A phenomenological answer to the Hubble tension
• Negative cosmological constant in the dark energy sector: tests from JWST photometric and spectroscopic observations of high-redshift galaxies
• hi_class: Background Evolution, Initial Conditions and Approximation Schemes
• Model-independent cosmological inference post DESI DR1 BAO measurements
• Model selection applied to reconstructions of the Dark Energy
• Transition dynamics in the ${\Lambda }_{\mathrm{s}}$CDM model: Implications for bound cosmic structures
• Constraining the dark-energy equation of state with cosmological data
• Towards a possible solution to the Hubble tension with Horndeski gravity
• On the phantom barrier crossing and the bounds on the speed of sound in non-minimal derivative coupling theories
• Exploring new physics in the late Universe's expansion through non-parametric inference
• Phantom crossing dark energy in Horndeski's theory
• Towards alleviating the $H_0$ and $S_8$ tensions with Early Dark Energy - Dark Matter drag
• Understanding large scale CMB anomalies with the generalized non-minimal derivative coupling during inflation

Cited by in corpus (7)

• Robustness of dark energy phenomenology across different parameterizations
• Testing signatures of phantom crossing through full-shape galaxy clustering analysis
• Quintessential Implications of the presence of AdS in the Dark Energy sector
• Constraints on the Hubble and matter density parameters with and without modelling the CMB anisotropies
• A short review on Quintom dark energy theory
• Probing dynamical embeddings in a five-dimensional spacetime in light of DESI BAO
• Post-Newtonian Constraints on Scalar-Tensor Gravity