Dynamics of minimally coupled dark energy in spherical halos of dark matter

Abstract

We analyse the evolution of scalar field dark energy in the spherical halos of dark matter at the late stages of formation of gravitationally bound systems in the expanding Universe. The dynamics of quintessential dark energy at the center of dark matter halo strongly depends on the value of effective sound speed $c_s$ (in units of speed of light). If $c_s\sim 1$ (classical scalar field) then the dark energy in the gravitationally bound systems is only slightly perturbed and its density is practically the same as in cosmological background. The dark energy with small value of sound speed ($c_s<0.1$), on the contrary, is important dynamical component of halo at all stages of their evolution: linear, non-linear, turnaround, collapse, virialization and later up to current epoch. These properties of dark energy can be used for constraining the value of effective sound speed $c_s$ by comparison the theoretical predictions with observational data related to the large scale gravitationally bound systems.

17 pages, 6 figures; accepted for publication in General Relativity and Gravitation

References in corpus (36)

• Dynamics of dark energy
• Efficient Computation of CMB anisotropies in closed FRW models
• Halo Models of Large Scale Structure
• Using the Evolution of Clusters to Constrain Omega
• Cluster Abundance Constraints on Quintessence Models
• Cosmology and fundamental physics with the Euclid satellite
• Structure Formation with Generalized Dark Matter
• Cosmological Constraints from Measurements of Type Ia Supernovae discovered during the first 1.5 years of the Pan-STARRS1 Survey
• The Laniakea supercluster of galaxies
• Dark Energy and Dark Gravity
• On the spherical collapse model in dark energy cosmologies
• Linear and non-linear perturbations in dark energy models
• Theoretical Models of Dark Energy
• Dust of Dark Energy
• A Low CMB Quadrupole from Dark Energy Isocurvature Perturbations
• Structure Formation in Inhomogeneous Dark Energy Models
• Constraining cosmological parameters using Sunyaev-Zel'dovich cluster surveys
• Constraining dark energy from the abundance of weak gravitational lenses
• Spherical collapse in quintessence models with zero speed of sound
• Cluster number counts dependence on dark energy inhomogeneities and coupling to dark matter
• On virialization with dark energy
• Constraining dark energy with Sunyaev-Zel'dovich cluster surveys
• Physical approximations for the nonlinear evolution of perturbations in dark energy scenarios
• Chasing the phantom: A closer look at Type Ia supernovae and the dark energy equation of state
• Dark Energy Constraints after Planck
• How clustering dark energy affects matter perturbations
• Can cosmological observations uniquely determine the nature of dark energy ?
• The Dark Side of the Universe after Planck
• Constraining the dynamical dark energy parameters: Planck-2013 vs WMAP9
• An Improved Semi-Analytical Spherical Collapse Model for Non-linear Density Evolution
• Sound speed of scalar field dark energy: weak effects and large uncertainties
• Non-linear power spectra of dark and luminous matter in halo model of structure formation
• Simulation studies of dark energy clustering induced by the formation of dark matter halos
• Dynamics of dark energy in the gravitational fields of matter inhomogeneities
• Distribution of dark energy in the vicinity of compact objects
• Dynamics of dark energy in collapsing halo of dark matter

Cited by in corpus (12)

• Structure formation in dark energy cosmologies described by PADE parameterization
• The first molecules in the intergalactic medium and halos of the Dark Ages and Cosmic Dawn
• Hydrogen Molecules in the Dark Ages Halos: Thermal Emission vs. Resonant Scattering
• Thermal and Resonant Emission of Dark Ages Halos in the Rotational Lines of HeH${}^{+}$
• Evolution of density and velocity profiles of dark matter and dark energy in spherical voids
• Halos in Dark Ages: formation and chemistry
• Tachyonic vs Quintessence dark energy: linear perturbations and CMB data
• Redshifted 21-cm emission signal from the halos in Dark Ages
• Evolution of cosmological perturbations in the models with interacting dynamical dark energy
• Voids in the Cosmic Web as a probe of dark energy
• Evolution of density and velocity profiles of matter in large voids
• White dwarfs as a probe of dark energy