Dynamical friction shear and rotation in Chaplygin cosmology

Abstract

In this study, we build upon the findings of Del Popolo et al. (2013) by further analyzing the influence of dynamical friction on the evolution of cosmological perturbations within the framework of the spherical collapse model (SCM) in a Universe dominated by generalized Chaplygin gas (GCG). Specifically, we investigate how dynamical friction alters the growth rate of density perturbations, the effective sound speed, the equation-of-state parameter www, and the evolution of the cosmic expansion rate. Our results demonstrate that dynamical friction significantly delays the collapse process compared to the standard SCM. Accurate computation of these parameters is crucial for obtaining consistent results and reliable physical interpretations when employing the GCG model. Furthermore, our analysis confirms that the suppression of perturbation growth due to dynamical friction is considerably more pronounced than that caused by shear and rotation, as previously indicated by Del Popolo et al. (2013). This enhanced suppression effectively addresses the instability issues, such as oscillations or exponential divergences in the dark-matter power spectrum, highlighted in linear perturbation studies, such as those by Sandvik et al. (2004).

17pp 6 figs. arXiv admin note: text overlap with arXiv:1303.3628

References in corpus (104)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Dynamics of dark energy
• Cosmological parameters from SDSS and WMAP
• An alternative to quintessence
• Discovery of a Supernova Explosion at Half the Age of the Universe and its Cosmological Implications
• Generalized Chaplygin Gas, Accelerated Expansion and Dark Energy-Matter Unification
• In the Realm of the Hubble tension $-$ a Review of Solutions
• 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
• Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
• Cosmological Perturbation Theory in the Synchronous vs. Conformal Newtonian Gauge
• The 3D power spectrum of galaxies from the SDSS
• Cosmological Results from High-z Supernovae
• Improved Cosmological Constraints from New, Old and Combined Supernova Datasets
• Cosmological Tracking Solutions
• Spectra and Light Curves of Six Type Ia Supernovae at 0.511 < z < 1.12 and the Union2 Compilation
• Cosmological Parameters from Observations of Galaxy Clusters
• Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas
• Can the Chaplygin gas be a plausible model for dark energy?
• The end of unified dark matter?
• A Lower Growth Rate from Recent Redshift Space Distortion Measurements than Expected from Planck
• WMAP and the Generalized Chaplygin Gas
• Generalized Chaplygin gas and CMBR constraints
• WMAP Constraints on the Generalized Chaplygin Gas Model
• Constraints on the generalized Chaplygin gas from supernovae observations
• The Revival of the Unified Dark Energy-Dark Matter Model ?
• You need not be afraid of phantom energy
• Coupled dark energy: Towards a general description of the dynamics
• Cosmological consequences of a Chaplygin gas dark energy
• Evolution of the angular momentum of protogalaxies from tidal torques: Zel'dovich approximation
• Hydrodynamical N-body simulations of coupled dark energy cosmologies
• Are Chaplygin gases serious contenders to the dark energy throne?
• On Formation and Evolution of Disk Galaxies: Cosmological Initial Conditions and the Gravitational Collapse
• Latest Supernova data in the framework of Generalized Chaplygin Gas model
• The Dynamics of Relativistic Membranes I: Reduction to 2-dimensional Fluid Dynamics
• Skewness and Kurtosis in Large-Scale Cosmic Fields
• Cosmological Effects of a Class of Fluid Dark Energy Models
• Review: galactic angular momenta and angular momentum correlations in the cosmological large-scale structure
• N-body simulations for coupled dark energy: halo mass function and density profiles
• The secondary infall model of galactic halo formation and the spectrum of cold dark matter particles on Earth
• Structure formation in the presence of dark energy perturbations
• A high-flux source of polarization-entangled photons from a periodically-poled KTP parametric downconverter
• On the physical origin of dark matter density profiles
• An Analytical Model for the Triaxial Collapse of Cosmological Perturbations
• The structure of dark matter halos in hierarchical clustering theories
• High-redshift objects and the generalized Chaplygin gas
• Interacting Chaplygin gas
• The Cusp/Core problem and the Secondary Infall Model
• Generalized Chaplygin Gas Model: Dark Energy - Dark Matter Unification and CMBR Constraints
• Expected constraints on the generalized Chaplygin equation of state from future supernova experiments and gravitational lensing statistics
• On the Newtonian Cosmology Equations with Pressure
• Stabilization of Extra Dimensions at Tree Level
• Gauge-invariant analysis of perturbations in Chaplygin gas unified models of dark matter and dark energy
• Constraints on Chaplygin quartessence from the CLASS gravitational lens statistics and supernova data
• Investigating the Origins of Dark Matter Halo Density Profiles
• Non-linear evolution of the angular momentum of protostructures from tidal torques
• Physical approximations for the nonlinear evolution of perturbations in dark energy scenarios
• Alternatives to Quintessence Model Building
• Curvature force and dark energy
• A Particle Field Theorist's Lectures on Supersymmetric, Non-Abelian Fluid Mechanics and d-Branes
• Large scale structure and the generalised Chaplygin gas as dark energy
• Self-similar spherical collapse with non-radial motions
• The Role of Baryons in Unified Dark Matter Models
• Cosmological constraints on Chaplygin gas dark energy from galaxy clusters X-ray and supernova data
• Supernovae constraints on models of dark energy revisited
• Unified Dark Matter Scalar Field Models
• Cosmological Perturbation Theory and the Spherical Collapse Model - I. Gaussian Initial Conditions
• Spherical collapse model in dark energy cosmologies
• Is there concordance within the concordance $\Lambda$CDM model?
• Spherical collapse model with shear and angular momentum in dark energy cosmologies
• Bayesian Analysis of the Chaplygin Gas and Cosmological Constant Models using the SNe Ia Data
• Observational constraints on cosmology from modified Friedmann equation
• Non-Linear gravitational growth of large scale structures inside and outside standard Cosmology
• WMAP5 constraints on the unified model of dark energy and dark matter
• N-body Simulations for Extended Quintessence Models
• Shear and rotation in Chaplygin cosmology
• Non-radial motion and the NFW profile
• Nonlinear density evolution from an improved spherical collapse model
• Density profiles in a spherical infall model with non-radial motions
• Extended Spherical Collapse and the Accelerating Universe
• Cosmological measure with volume averaging and the vacuum energy problem
• Cosmological Density Distribution Function from the Ellipsoidal Collapse Model in Real Space
• The onset of the non-linear regime in unified dark matter models
• Nonlinear evolution of dark matter and dark energy in the Chaplygin-gas cosmology
• Irreversible Processes in a Universe modelled as a mixture of a Chaplygin gas and radiation
• Evolution of Cosmological Density Distribution Function from the Local Collapse Model
• Dynamical Mutation of Dark Energy
• Secondary infall and dark matter haloes
• A high precision semi-analytic mass function
• Unified Model for Dark Energy
• Linear and non-Linear Instabilities in Unified Dark Energy Models
• Cluster scaling relations from cosmological hydrodynamic simulations in dark energy dominated universe
• Self-Similar Spherical Collapse with Tidal Torque
• Generalized Chaplygin gas with $\alpha =0$ and the $\Lambda CDM$ cosmological model
• Some improvements to the spherical collapse model
• An Improved Semi-Analytical Spherical Collapse Model for Non-linear Density Evolution
• Mass-Temperature relation in $\Lambda$CDM and modified gravity
• Open static Chaplygin universe
• Constraints on shear and rotation with massive galaxy clusters
• Spherical `Top-Hat' Collapse in general Chaplygin gas dominated universes
• Interacting Chaplygin gas revisited
• Effects of dynamical friction on perturbations for evolving dark energy