Skewness of matter distribution in clustering dark energy cosmologies

Abstract

We calculate the skewness (the third moment $S_3$) of matter distribution in dynamical dark energy cosmologies. We pay particular attention to the impact of dark energy perturbations on this quantity. There is indeed a clear signature of dark energy perturbations on this quantity. By properly allowing dark energy perturbations we show that their impact on $S_3$ is strong enough (a factor $\sim 3$ greater) to easily discriminate between clustering and non-clustering dark energy cosmologies. This indicates that high order statistics of the cosmic density field are useful to the study of dark energy models and are potentially able to rule out clustering dark energy cosmologies.

arXiv comment7 pages, 2 figures

References in corpus (36)

• Essentials of k-essence
• Perturbations in k-inflation
• Accelerated expansion of the universe driven by tachyonic matter
• Cosmology with tachyon field as dark energy
• On the spherical collapse model in dark energy cosmologies
• The Effective Theory of Quintessence: the w<-1 Side Unveiled
• Dust of Dark Energy
• Skewness and Kurtosis in Large-Scale Cosmic Fields
• Structure formation in the presence of dark energy perturbations
• Spherical collapse in quintessence models with zero speed of sound
• Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter
• On the Newtonian Cosmology Equations with Pressure
• Physical approximations for the nonlinear evolution of perturbations in dark energy scenarios
• Structure formation in inhomogeneous Early Dark Energy models
• Power spectrum for the Bose-Einstein condensate dark matter
• Testing Quintessence models with large-scale structure growth
• Cosmological structure formation with clustering quintessence
• Effects of shear and rotation on the spherical collapse model for clustering dark energy
• Skewness as a test of the equivalence principle
• Spherical collapse of dark energy with an arbitrary sound speed
• Non-linear Fields in Generalized Cosmologies
• Higher Order Moments of the Angular Distribution of Galaxies from Early SDSS Data
• Omega from the skewness of the cosmic velocity divergence
• A new perspective on the relation between dark energy perturbations and the late-time ISW effect
• Matter Power Spectrum for the Generalized Chaplygin Gas Model: The Newtonian Approach
• Skewness as a test for Quartessence
• Clustering dark energy and halo abundances
• Second-order matter density perturbations and skewness in scalar-tensor modified gravity models
• Dark energy perturbations in $N$-body simulations
• Cold dark energy constraints from the abundance of galaxy clusters
• Constraining Primordial Non-Gaussianity with Moments of the Large Scale Density Field
• Revealing the non-adiabatic nature of dark energy perturbations from galaxy clustering data
• Degeneracy between nonadiabatic dark energy models and $\Lambda$CDM: ISW effect and the cross correlation of CMB with galaxy clustering data
• On Observables in a Dark Matter-Clustering Quintessence System
• The skewness and kurtosis of the projected density distribution function: validity of perturbation theory
• Effect of Dark Energy Perturbation on Cosmic Voids Formation

Cited by in corpus (1)

• The $S_8$ Tension in Light of Updated Redshift-Space Distortion Data and PAge Approximation