Dynamical dark energy versus $\Lambda =$const. in light of observations

Abstract

After about two decades of the first observational papers confirming the accelerated expansion of the universe, we are still facing the question whether the cause of it is a rigid cosmological constant $\Lambda$-term or a mildly evolving dynamical dark energy (DDE). While studies focusing mainly on CMB measurements do not perceive signs of physics beyond the $\Lambda$CDM, in this work we show that if we take a large string $SNIa+BAO+H(z)+LSS+CMB$ of modern cosmological observations, in which not only the CMB but also a rich sample of large scale structure formation data are included, one can extract $\sim 3.3\sigma$ signs of DDE using a simple XCDM parameterization. These signs can be enhanced up to near $3.8\sigma$ in the context of the running vacuum model (RVM), in which the vacuum energy density is in interaction with dark matter. Recently the RVM has been shown to provide an efficient and economical solution to the ${\sigma }_8$-tension, which is one of the intriguing phenomenological problems that has not been possible to solve within the $\Lambda$CDM so far. This fact contributes to strengthen the possibility that dynamical vacuum energy, or in general DDE, could be presently favored by the observations.

Matches the published version in Europhys. Lett. 121 (2018) 39001

References in corpus (25)

• Dynamics of dark energy
• Cosmology and the Fate of Dilatation Symmetry
• A 2.4% Determination of the Local Value of the Hubble Constant
• The Clustering of the SDSS DR7 Main Galaxy Sample I: A 4 per cent Distance Measure at z=0.15
• Raising the bar: new constraints on the Hubble parameter with cosmic chronometers at z$\sim$2
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• Baryon Acoustic Oscillations in the Lyα forest of BOSS DR11 quasars
• A test of the nature of cosmic acceleration using galaxy redshift distortions
• Dynamical dark energy in light of the latest observations
• Can interacting dark energy solve the $H_0$ tension?
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies
• Indications of a late-time interaction in the dark sector
• KiDS-450 + 2dFLenS: Cosmological parameter constraints from weak gravitational lensing tomography and overlapping redshift-space galaxy clustering
• Constraining Dark Energy Dynamics in Extended Parameter Space
• Measurements of the Temperature and E-Mode Polarization of the CMB from 500 Square Degrees of SPTpol Data
• Cosmographic bounds on the cosmological deceleration-acceleration transition redshift in $f(\mathcal{R})$ gravity
• The $H_0$ tension in light of vacuum dynamics in the Universe
• Dynamical vacuum energy in the expanding Universe confronted with observations: a dedicated study
• Growth rate of cosmological perturbations at z ~ 0.1 from a new observational test
• The $\bar{\Lambda }CDM$ cosmology: from inflation to dark energy through running $\Lambda$
• Constraints on interacting dark energy models from Planck 2015 and redshift-space distortion data
• Dynamical dark energy: scalar fields and running vacuum
• Relaxing the ${\sigma }_8$-tension through running vacuum in the Universe
• Conjoined constraints on modified gravity from the expansion history and cosmic growth
• Vacuum dynamics in the Universe versus a rigid $\Lambda =$const

Cited by in corpus (72)

• Cosmology Intertwined III: $f{\sigma }_8$ and $S_8$
• 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
• $H_0$ from cosmic chronometers and Type Ia supernovae, with Gaussian Processes and the novel Weighted Polynomial Regression method
• Constraints on the sum of the neutrino masses in dynamical dark energy models with $w(z)\ge -1$ are tighter than those obtained in $\Lambda$CDM
• Update on Coupled Dark Energy and the $H_0$ tension
• Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
• Possible signals of vacuum dynamics in the Universe
• Beyond $\Lambda$CDM with Low and High Redshift Data: Implications for Dark Energy
• Renormalizing the vacuum energy in cosmological spacetime: implications for the cosmological constant problem
• The Cosmological Constant Problem and Running Vacuum in the Expanding Universe
• Constraints on dark energy dynamics and spatial curvature from Hubble parameter and baryon acoustic oscillation data
• Running vacuum in quantum field theory in curved spacetime: renormalizing ${\rho }_{vac}$ without $\sim m^4$ terms
• Observational constraints on the tilted spatially-flat and the untilted nonflat $\varphi$CDM dynamical dark energy inflation models
• Planck 2015 constraints on the non-flat $\Lambda$CDM inflation model
• An overview of what current data can (and cannot yet) say about evolving dark energy
• Gravitational and Chiral Anomalies in the Running Vacuum Universe and Matter-Antimatter Asymmetry
• Brans-Dicke cosmology with a $\Lambda$- term: a possible solution to $\Lambda$CDM tensions
• Running vacuum in the Universe: phenomenological status in light of the latest observations, and its impact on the ${\sigma }_8$ and $H_0$ tensions
• Can dark energy be expressed as a power series of the Hubble parameter?
• Planck 2015 constraints on the non-flat $\varphi$CDM inflation model
• Big Bang Nucleosynthesis constraints on higher-order modified gravities
• Planck 2015 constraints on the non-flat XCDM inflation model
• Stringy-Running-Vacuum-Model Inflation: from primordial Gravitational Waves and stiff Axion Matter to Dynamical Dark Energy
• Equation of state of the running vacuum
• Large-scale (in-) stability Analysis of an Exactly Solved Coupled Dark-Energy Model
• Inflationary physics and transplanckian conjecture in the Stringy Running-Vacuum-Model: from the phantom vacuum to the true vacuum
• Planck 2015 constraints on spatially-flat dynamical dark energy models
• Phantom matter: a challenging solution to the cosmological tensions
• Quantifying the evidence for the current speed-up of the Universe with low and intermediate-redshift data. A more model-independent approach
• Composite Dark Energy and the Cosmological Tensions
• Late time acceleration due to generic modification of gravity and Hubble tension
• Quantifying the impacts of future gravitational-wave data on constraining interacting dark energy
• Dynamics in Varying vacuum Finsler-Randers Cosmology
• Running vacuum in QFT in FLRW spacetime: The dynamics of ${\rho }_{\mathrm{vac}}(H)$ from the quantized matter fields
• A model of interacting dark fluids tested with supernovae and Baryon Acoustic Oscillations data
• Cosmological parameter estimation via iterative emulation of likelihoods
• Cosmology Intertwined: A Review of the Particle Physics, Astrophysics, and Cosmology Associated with the Cosmological Tensions and Anomalies
• 3+1 Formulation of the Standard-Model Extension Gravity Sector
• Dynamical systems methods and statefinder diagnostic of interacting vacuum energy models
• Models of vacuum energy interacting with cold dark matter: Constraints and comparison
• Exploring interacting holographic dark energy in a perturbed universe with parameterized post-Friedmann approach
• Stringy Running Vacuum Model and current Tensions in Cosmology
• Growth of structure in interacting vacuum cosmologies
• Friedmann cosmology with decaying vacuum density in Brans-Dicke theory
• Primordial Black Holes and Gravitational Waves in Multi-Axion-Chern-Simons Inflation
• Constraints on neutrino mass in the scenario of vacuum energy interacting with cold dark matter after Planck 2018
• Running vacuum in Brans-Dicke theory: a possible cure for the ${\sigma }_8$ and $H_0$ tensions
• Key drivers of the preference for dynamic dark energy
• Brans-Dicke gravity: from Higgs physics to (dynamical) dark energy
• Interacting dark energy after DESI DR2: a challenge for $\Lambda$CDM paradigm?
• Geometrical origins of the Universe dark sector: string-inspired torsion and anomalies as seeds for inflation and dark matter
• New cosmological constraints on the evolution of dark matter energy density
• A preference for dynamical phantom dark energy using one-parameter model with Planck, DESI DR1 BAO and SN data
• Scalar Field Theory Description of the Running Vacuum Model: the Vacuumon
• Constraints on Dark Energy Models Using Late Universe Probes
• Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with $\Lambda (t)$CDM cosmology
• Dynamic properties of cyclic cosmologies
• Constraints on a special running vacuum model
• Quantum Discrete Levels of the Universe from the Early Trans-Planckian Vacuum to the Late Dark Energy
• String-Inspired Running Vacuum, the "Vacuumon", and the Swampland Criteria
• Hubble-rate-dependent Dark Energy in Brans-Dicke Cosmology
• Constraining deviations from $\Lambda$CDM in the Hubble expansion rate
• Signature flips in time-varying $\Lambda (t)$ cosmological models with observational data
• Running vacuum model in non-flat universe
• Revisiting model-independent constraints on spatial curvature and cosmic ladders calibration: updated and forecast analyses
• Endowing $\mathbf{\Lambda }$ with a dynamic nature: constraints in a spatially curved Universe
• Running vacuum and H^4-inflation
• Bayesian analysis of running holographic Ricci dark energy
• Cosmological evolution of the proton-to-electron mass ratio in an extended Brans-Dicke theory
• The dynamics of vacuum, gravity and matter: Implications on the fundamental constants
• Cosmological constraints on the big bang quantum cosmology model