Voids and overdensities of coupled Dark Energy

Abstract

We investigate the clustering properties of dynamical Dark Energy even in association of a possible coupling between Dark Energy and Dark Matter. We find that within matter inhomogeneities, Dark Energy migth form voids as well as overdensity depending on how its background energy density evolves. Consequently and contrarily to what expected, Dark Energy fluctuations are found to be slightly suppressed if a coupling with Dark Matter is permitted. When considering density contrasts and scales typical of superclusters, voids and supervoids, perturbations amplitudes range from $|{\delta }_{\varphi }|\sim \mathcal{O}(10^{-6})$ to $|{\delta }_{\varphi }|\sim \mathcal{O}(10^{-4})$ indicating an almost homogeneous Dark Energy component.

arXiv comment21 pages, 12 figures, submitted to JCAP

References in corpus (65)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Dynamics of dark energy
• The Cosmological Constant and Dark Energy
• Cosmological parameters from SDSS and WMAP
• A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation
• Coupled Quintessence
• New Hubble Space Telescope Discoveries of Type Ia Supernovae at z > 1: Narrowing Constraints on the Early Behavior of Dark Energy
• Chameleon Cosmology
• MAXIMA-1: A Measurement of the Cosmic Microwave Background Anisotropy on angular scales of 10 arcminutes to 5 degrees
• Cluster Abundance Constraints on Quintessence Models
• DASI First Results: A Measurement of the Cosmic Microwave Background Angular Power Spectrum
• Quintessence arising from exponential potentials
• Interacting quintessence solution to the coincidence problem
• Interacting Dark Matter and Dark Energy
• Quintessence as a run-away dilaton
• Probing the Coupling between Dark Components of the Universe
• Parameter constraints for flat cosmologies from CMB and 2dFGRS power spectra
• Numerical study of halo concentrations in dark-energy cosmologies
• Scalar-Tensor Gravity and Quintessence
• On the spherical collapse model in dark energy cosmologies
• Linear and non-linear perturbations in dark energy models
• Voids in the 2dF Galaxy Redshift Survey
• Observational constraints on interacting quintessence models
• A new upper limit on the total neutrino mass from the 2dF Galaxy Redshift Survey
• Extragalactic Radio Sources and the WMAP Cold Spot
• N-body simulations for coupled dark energy: halo mass function and density profiles
• Structure formation in the presence of dark energy perturbations
• Structure Formation in Inhomogeneous Dark Energy Models
• Exhaustive Study of Cosmic Microwave Background Anisotropies in Quintessential Scenarios
• Matter density perturbations in interacting quintessence models
• Scalar--Tensor Theories of Gravity with \PHI Dependent Masses
• Coupled quintessence and the coincidence problem
• Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter
• On virialization with dark energy
• Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies: The Effect of a Cosmological Constant
• Dark energy and the evolution of spherical overdensities
• Constraints on the coupled quintessence from cosmic microwave background anisotropy and matter power spectrum
• A study of the core of the Shapley Concentration: IV. Distribution of intercluster galaxies and supercluster properties
• Modeling Dynamical Dark Energy
• Brane Worlds and the Cosmic Coincidence Problem
• Mass functions in coupled Dark Energy models
• Voids of dark energy
• Virialization in Dark Energy Cosmology
• Dark Matter and Dark Energy from the solution of the strong CP problem
• Formation of voids in the Universe within the Lemaitre-Tolman model
• On the Magnitude of Dark Energy Voids and Overdensities
• Toward a Unified Description of Dark Energy and Dark Matter from the Abnormally Weighting Energy Hypothesis
• CMB Anisotropies in the Presence of Extra Dimensions
• Cluster mass functions in the quintessential Universe
• Number counts in homogeneous and inhomogeneous dark energy models
• The Integrated Sachs-Wolfe Effect in Interacting Dark Energy Models
• Limits on coupling between dark components
• Non-linear perturbations in scalar-tensor cosmologies
• Dark Matter and Dark Energy from a single scalar field and CMB data
• Unified model of baryonic matter and dark components
• Non linear predictions from linear theories in models with Dark Energy
• Non-linear gravitational clustering in scalar field cosmologies
• Using the cluster mass function from weak lensing to constrain neutrino masses
• Two-fluid matter-quintessence FLRW models: energy transfer and the equation of state of the universe
• The integrated Sachs-Wolfe effect in cosmologies with coupled dark matter and dark energy
• Dark Matter-baryon segregation in the non-linear evolution of coupled Dark Energy model
• Higher neutrino mass allowed if Cold Dark Matter and Dark Energy are coupled
• Constraints on Quintessence From Using Cosmological Data
• Scalar field-perfect fluid correspondence and nonlinear perturbation equations

Cited by in corpus (6)

• The Growth of Structure in Interacting Dark Energy Models
• Understanding the origin of CMB constraints on Dark Energy
• A comparison of perturbations in fluid and scalar field models of dark energy
• Growth of spherical overdensities in scalar-tensor cosmologies
• Dark Matter-Dark Energy Interaction and the Shape of Cosmic Voids
• Constraints on Dark Energy state equation with varying pivoting redshift