Assessing the impact of bulk and shear viscosities on large scale structure formation

Abstract

It is analyzed the effects of both bulk and shear viscosities on the perturbations, relevant for structure formation in late time cosmology. It is shown that shear viscosity can be as effective as the bulk viscosity on suppressing the growth of perturbations and delaying the nonlinear regime. A statistical analysis of the shear and bulk viscous effects is performed and some constraints on these viscous effects are given.

arXiv commentV2. Final version

References in corpus (56)

• The Structure of Cold Dark Matter Halos
• Efficient Computation of CMB anisotropies in closed FRW models
• Dark Matter Substructure in Galactic Halos
• Where are the missing galactic satellites?
• The Core-Cusp Problem
• The 6dF Galaxy Survey: z \approx 0 measurement of the growth rate and sigma_8
• The WiggleZ Dark Energy Survey: the growth rate of cosmic structure since redshift z=0.9
• Planck 2015 results. XXIV. Cosmology from Sunyaev-Zeldovich cluster counts
• 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
• Measuring the dark side (with weak lensing)
• A constant dark matter halo surface density in galaxies
• Reconstructing the history of structure formation using redshift distortions
• Interpreting large-scale redshift-space distortion measurements
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: RSD measurement from the power spectrum and bispectrum of the DR12 BOSS galaxies
• Bulk Viscous Cosmology
• The VIMOS Public Extragalactic Redshift Survey (VIPERS). Galaxy clustering and redshift-space distortions at z=0.8 in the first data release
• Viscous Cosmology for Early- and Late-Time Universe
• Effective gravitational couplings for cosmological perturbations in the most general scalar-tensor theories with second-order field equations
• Does Bulk Viscosity Create a Viable Unified Dark Matter Model?
• Bulk Viscous Cosmology
• Bulk viscosity driving the acceleration of the Universe
• The growth rate of cosmic structure from peculiar velocities at low and high redshifts
• A practical approach to cosmological perturbations in modified gravity
• Shear viscous effects on the primordial power spectrum from warm inflation
• Nonlinear bulk viscosity and inflation
• Dark goo: Bulk viscosity as an alternative to dark energy
• Growth rate of cosmological perturbations at z ~ 0.1 from a new observational test
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: measuring structure growth using passive galaxies
• Viscous dark fluid universe
• Matter creation and cosmic acceleration
• Bulk Viscosity, Decaying Dark Matter, and the Cosmic Acceleration
• Dissipation of dark matter
• Constraints on dissipative unified dark matter
• Cosmological fluctuations of a random field and radiation fluid
• Bulk viscous cosmology with causal transport theory
• Non-adiabatic dark fluid cosmology
• Cosmological perturbations in warm inflationary models with viscous pressure
• The mass of the dark matter particle from theory and observations
• Large scale structure from viscous dark matter
• Constraining dark matter properties with Cosmic Microwave Background observations
• Accelerating cosmological expansion from shear and bulk viscosity
• Viscous cosmological models and accelerated Universes
• Phantom dark energy as an effect of bulk viscosity
• Stability analysis for the background equations for inflation with dissipation and in a viscous radiation bath
• An extensive investigation of the Generalised Dark Matter model
• Cosmology with matter diffusion
• Viscous dark matter growth in (neo-)Newtonian cosmology
• Ambiguous Tests of General Relativity on Cosmological Scales
• Is the continuous matter creation cosmology an alternative to $\Lambda$CDM?
• The effect of early radiation in N-body simulations of cosmic structure formation
• Structure formation in a $\Lambda$ $viscous$ CDM universe
• Dark matter velocity dispersion effects on CMB and matter power spectra
• Degeneracy between CCDM and $\Lambda$CDM cosmologies
• Note on "Continuous matter creation and the acceleration of the universe: the growth of density fluctuations"
• Spherical collapse for unified dark matter models
• Non-linear curvature inhomogeneities and backreaction for relativistic viscous fluids

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• Warm inflation as a way out of the swampland
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• Challenging bulk viscous unified scenarios with cosmological observations
• Accelerated and decelerated expansion in a causal dissipative cosmology
• Growth of matter perturbations in the extended viscous dark energy models
• Viscosity in cosmic fluids
• Cosmological consequences of first-order general-relativistic viscous fluid dynamics
• A new Parametrization for Bulk Viscosity Cosmology as Extension of the $\Lambda$CDM Model
• The Integrated Sachs-Wolfe Effect in the Bulk Viscous Dark Energy Model
• Early-time thermalization of cosmic components? A hint for solving cosmic tensions
• Dark Matter Cosmology with Varying Viscosity: a Possible Resolution to the $S_8$ Tension
• Vector perturbations in bouncing cosmology
• Evolution of dissipative and non-dissipative universes in holographic cosmological models with a power-law term
• Viscous attenuation of gravitational waves propagating through an inhomogeneous background
• A comparative analysis of dissipation coefficients in warm inflation
• Dynamical analysis of a first order theory of bulk viscosity
• Modified gravity versus shear viscosity: imprints on the scalar matter perturbations
• Stage IV CMB forecasts for warm inflation
• Note on bulk viscosity as an alternative to dark energy
• Singularities and Soft-Big Bang in a viscous $\Lambda$CDM model
• Backreaction from inhomogeneous matter fields during large-scale structure formation