Spherical collapse model in agegraphic dark energy cosmologies

Abstract

Under the commonly used spherical collapse model, we study how dark energy affects the growth of large scale structures of the Universe in the context of agegraphic dark energy models. The dynamics of the spherical collapse of dark matter halos in nonlinear regimes is determined by the properties of the dark energy model. We show that the main parameters of the spherical collapse model are directly affected by the evolution of dark energy in the agegraphic dark energy models. We compute the spherical collapse quantities for different values of agegraphic model parameter $\alpha$ in two different scenarios: first, when dark energy does not exhibit fluctuations on cluster scales, and second, when dark energy inside the overdense region collapses similar to dark matter. Using the Sheth-Tormen and Reed mass functions, we investigate the abundance of dark matter halos in the framework of agegraphic dark energy cosmologies. The model parameter $\alpha$ is a crucial parameter in order to count the abundance of dark matter halos. Specifically, the present analysis suggests that the agegraphic dark energy model with bigger (smaller) value of $\alpha$ predicts less (more) virialized halos with respect to that of $\Lambda$CDM cosmology. We also show that in agegraphic dark energy models, the number of halos strongly depends on clustered or uniformed distributions of dark energy.

arXiv comment14 pages, 7 figures. Accepted in Physical Review D

References in corpus (99)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Planck 2015 results. XIII. Cosmological parameters
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• An Alternative to Compactification
• Dynamics of dark energy
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Cosmological Constant and Dark Energy
• Detection of the Baryon Acoustic Peak in the Large-Scale Correlation Function of SDSS Luminous Red Galaxies
• The World as a Hologram
• Cosmological parameters from SDSS and WMAP
• Cosmological Imprint of an Energy Component with General Equation of State
• 4D Gravity on a Brane in 5D Minkowski Space
• A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state
• Cosmological Constant - the Weight of the Vacuum
• Large scale bias and the peak background split
• The Case for a Positive Cosmological Lambda-term
• The Cosmological Constant
• An alternative to quintessence
• The 2dF Galaxy Redshift Survey: Power-spectrum analysis of the final dataset and cosmological implications
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• A Model of Holographic Dark Energy
• Essentials of k-essence
• Baryon Acoustic Oscillations in the Sloan Digital Sky Survey Data Release 7 Galaxy Sample
• Ellipsoidal collapse and an improved model for the number and spatial distribution of dark matter haloes
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Effective Field Theory, Black Holes, and the Cosmological Constant
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Sky Maps, Systematic Errors, and Basic Results
• Accelerated expansion of the universe driven by tachyonic matter
• Late-time cosmology in (phantom) scalar-tensor theory: dark energy and the cosmic speed-up
• An excursion set model of hierarchical clustering: Ellipsoidal collapse and the moving barrier
• Cluster Abundance Constraints on Quintessence Models
• Constraints on dark energy from Chandra observations of the largest relaxed galaxy clusters
• Entropy Bounds and Dark Energy
• Holographic dark energy and cosmic coincidence
• A Dark Energy Model Characterized by the Age of the Universe
• Ghost Inflation
• A New Model of Agegraphic Dark Energy
• The First Galaxies
• The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9
• Probable Values of the Cosmological Constant in a Holographic Theory
• Quintessence as a run-away dilaton
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measurements of the growth of structure and expansion rate at z=0.57 from anisotropic clustering
• Very weak lensing in the CFHTLS Wide: Cosmology from cosmic shear in the linear regime
• Measuring the dark side (with weak lensing)
• The halo mass function from the dark ages through the present day
• Dilatonic ghost condensate as dark energy
• The First Cosmic Structures and their Effects
• Probing dark energy perturbations: the dark energy equation of state and speed of sound as measured by WMAP
• Semi-analytic predictions for statistical properties of X-ray clusters of galaxies in cold dark matter universes
• Holographic dark energy models: A comparison from the latest observational data
• On the spherical collapse model in dark energy cosmologies
• Large Scale Cosmic Microwave Background Anisotropies and Dark Energy
• Testing LCDM with the Growth Function δ(a): Current Constraints
• Cosmological Constraints From the 100 Square Degree Weak Lensing Survey
• Cosmological Constraints on New Agegraphic Dark Energy
• Coupled and Extended Quintessence: theoretical differences and structure formation
• Skewness and Kurtosis in Large-Scale Cosmic Fields
• Measuring the Speed of Sound of Quintessence
• Instability of agegraphic dark energy models
• Constraints on scalar-tensor models of dark energy from observational and local gravity tests
• Testing dark energy beyond the cosmological constant barrier
• Structure formation in the presence of dark energy perturbations
• On the physical origin of dark matter density profiles
• The structure of dark matter halos in hierarchical clustering theories
• Interacting holographic dark energy
• Constraining dark energy from the abundance of weak gravitational lenses
• Spherical collapse in quintessence models with zero speed of sound
• On virialization with dark energy
• Investigating the Origins of Dark Matter Halo Density Profiles
• Holographic Scalar Fields Models of Dark Energy
• Physical approximations for the nonlinear evolution of perturbations in dark energy scenarios
• An Uncertainty Relation of Space-Time
• Probing spacetime foam with extragalactic sources
• Structure formation in inhomogeneous Early Dark Energy models
• Spherical collapse model in dark energy cosmologies
• The integrated Sachs-Wolfe Effect -- Large Scale Structure Correlation
• A comparison of structure formation in minimally and non-minimally coupled quintessence models
• Effects of shear and rotation on the spherical collapse model for clustering dark energy
• Structure formation in modified gravity models alternative to dark energy
• How clustering dark energy affects matter perturbations
• The spherical collapse model and cluster formation beyond the $\Lambda$ cosmology: Indications for a clustered dark energy?
• Structure formation in cosmologies with oscillating dark energy
• Spherical collapse of dark energy with an arbitrary sound speed
• Cosmological Density Distribution Function from the Ellipsoidal Collapse Model in Real Space
• Holographic principle and the dominant energy condition for Kasner type metrics
• Evolution of Cosmological Density Distribution Function from the Local Collapse Model
• Spherical collapse in modified gravity with the Birkhoff-theorem
• From spacetime foam to holographic foam cosmology
• A new perspective on the relation between dark energy perturbations and the late-time ISW effect
• Remarks on Dynamical Dark Energy Measured by the Conformal Age of the Universe
• Virialization of cosmological structures in models with time varying equation of state
• Evolution of spherical overdensities in holographic dark energy models
• Effects of ghost dark energy perturbations on the evolution of spherical overdensities
• Equations of State in the Brans-Dicke cosmology
• Growth of spherical overdensities in scalar-tensor cosmologies
• Constraints on shear and rotation with massive galaxy clusters
• Unified Dark Fluid with Constant Adiabatic Sound Speed: Including Entropic Perturbations
• Dark energy due to effective quantum field theory

Cited by in corpus (15)

• Can dark energy be expressed as a power series of the Hubble parameter?
• Cosmographic parameters in model-independent approaches
• Comparison between different methods of model selection in cosmology
• Can Holographic dark energy models fit the observational data?
• Modeling of accelerating Universe with bulk viscous fluid in Bianchi V space-time
• Running vacuum versus Holographic dark energy: a cosmographic comparison
• Observational constraints on the oscillating dark energy cosmologies
• Oscillating dark energy in light of the latest observations and its impact on the Hubble tension
• Structure formation in dark energy cosmologies described by PADE parameterization
• Structure formation in clustering DBI dark energy model with constant sound speed
• The growth of DM and DE perturbations in DBI non-canonical scalar field scenario
• Top-Hat Spherical Collapse with Clustering Dark Energy. I. Radius Evolution and Critical Contrast Density
• Confronting dark energy in Harada's Conformal Killing Gravity with observational data
• Observational Constraints and Geometric Diagnostics of Barboza-Alcaniz and Logarithmic Dark Energy Parametrizations
• Structure formation in a non-canonical scalar field model of clustering dark energy