Towards statistically homogeneous and isotropic perfect fluid universes with cosmic backreaction
arXiv:1907.08681 · doi:10.1088/1361-6382/ab376c
Abstract
A method for constructing statistically homogeneous and isotropic perfect fluid universe models with significant cosmic backreaction is proposed. The method is illustrated using a simplified model constructed as a Swiss-cheese model with Lemaitre-Tolman-Bondi structures. The model exhibits significant cosmic backreaction and is used to study methods proposed in the literature for relating volume averaged quantities with observations. The comparison shows a poor agreement between exact redshift-distance relations and the relations predicted by schemes based on volume averages. Most of these deviations are, however, clearly exaggerated by peculiarities of the example model, such as large local expansion rates.
arXiv comment35 pages, 10 captioned figures. Submitted for publication. v2: Typo in eq. 1 corrected and text added to explain figure. No changes to results. Matches publishd version
References in corpus (55)
- On average properties of inhomogeneous fluids in general relativity I: dust cosmologies
- On average properties of inhomogeneous fluids in general relativity II: perfect fluid cosmologies
- On cosmic acceleration without dark energy
- A general test of the Copernican Principle
- Backreaction in late-time cosmology
- Does the growth of structure affect our dynamical models of the universe? The averaging, backreaction and fitting problems in cosmology
- On cosmological observables in a swiss-cheese universe
- Light Propagation in Arbitrary Spacetimes and the Gravitational Lens Approximation
- "Swiss-Cheese" Inhomogeneous Cosmology & the Dark Energy Problem
- New test of the FLRW metric using the distance sum rule
- Light propagation in statistically homogeneous and isotropic dust universes
- Testing backreaction effects with observations
- Observational constraints on inhomogeneous cosmological models without dark energy
- Light-cone averages in a swiss-cheese universe
- Scalar Perturbations on Lemaitre-Tolman-Bondi Spacetimes
- Backreaction: directions of progress
- Regional averaging and scaling in relativistic cosmology
- Light propagation in statistically homogeneous and isotropic universes with general matter content
- Backreaction of inhomogeneities on the expansion: the evolution of cosmological parameters
- Szekeres Swiss-Cheese model and supernova observations
- Interpretation of the Hubble diagram in a nonhomogeneous universe
- Can inhomogeneties accelerate the cosmic volume expansion?
- The Effect of Large-Scale Inhomogeneities on the Luminosity Distance
- Emerging spatial curvature can resolve the tension between high-redshift CMB and low-redshift distance ladder measurements of the Hubble constant
- Evaluating backreaction with the peak model of structure formation
- Average expansion rate and light propagation in a cosmological Tardis spacetime
- Light Propagation and Large-Scale Inhomogeneities
- The Szekeres Swiss Cheese model and the CMB observations
- Luminosity distance in "Swiss cheese" cosmology with randomized voids: I. Single void size
- On globally static and stationary cosmologies with or without a cosmological constant and the Dark Energy problem
- Shrinking II -- The Distortion of the Area Distance-Redshift Relation in Inhomogeneous Isotropic Universes
- Swiss Cheese and a Cheesy CMB
- On light propagation in Swiss-Cheese cosmologies
- Virialisation-induced curvature as a physical explanation for dark energy
- Swiss-cheese models and the Dyer-Roeder approximation
- Hubble Diagram Dispersion From Large-Scale Structure
- Explicit Cosmological Coarse Graining via Spatial Averaging
- Exact spherically-symmetric inhomogeneous model with n perfect fluids
- Light propagation in Swiss cheese models of random close-packed Szekeres structures: Effects of anisotropy and comparisons with perturbative results
- A covariant treatment of cosmic parallax
- The effect of inhomogeneities on the distance to the last scattering surface and the accuracy of the CMB analysis
- Methods for studying the accuracy of light propagation in N-body simulations
- Studying the precision of ray tracing techniques with Szekeres models
- Cosmological backreaction and its dependence on spacetime foliation
- Effect of inhomogeneities on high precision measurements of cosmological distances
- Cosmological backreaction within the Szekeres model and emergence of spatial curvature
- Luminosity distance in Swiss cheese cosmology with randomized voids. II. Magnification probability distributions
- Dark Matter from Backreaction? Collapse models on galaxy cluster scales
- On the covariance of scalar averaging and backreaction in relativistic inhomogeneous cosmology
- How Do Nonlinear Voids Affect Light Propagation ?
- Comment on ``Nontrivial Geometries: Bounds on the Curvature of the Universe''
- Average luminosity distance in inhomogeneous universes
- Analytical solutions for two inhomogeneous cosmological models with energy flow and dynamical curvature
- Non-comoving baryons and cold dark matter in cosmic voids
- Evaluating backreaction with the ellipsoidal collapse model
Cited by in corpus (22)
- On the evolution of the Hubble constant with the SNe Ia Pantheon Sample and Baryon Acoustic Oscillations: a feasibility study for GRB-cosmology in 2030
- Robust Preference for Dynamical Dark Energy in DESI BAO and SN Measurements
- The state of the dark energy equation of state circa 2023
- Another look at redshift drift and the backreaction conjecture
- Observations in statistically homogeneous, locally inhomogeneous cosmological toy-models without FLRW backgrounds
- Searching for signals of inhomogeneity using multiple probes of the cosmic expansion rate H(z)
- An effective description of Laniakea: impact on cosmology and the local determination of the Hubble constant
- What is flat ΛCDM, and may we choose it?
- Theoretical and numerical perspectives on cosmic distance averages
- On the relationship between mean observations, spatial averages and the Dyer-Roeder approximation in Einstein-Straus models
- Quantifying effects of inhomogeneities and curvature on gravitational wave standard siren measurements of
- On the question of measuring spatial curvature in an inhomogeneous universe
- Effect of inhomogeneities on the propagation of gravitational waves from binaries of compact objects
- Light path averages in spacetimes with non-vanishing average spatial curvature
- Future deceleration due to backreaction in a Universe with multiple inhomogeneous domains
- On the convergence of cosmographic expansions in Lemaitre-Tolman-Bondi models
- Analyzing the 21-cm signal brightness temperature in the Universe with inhomogeneities
- Remarks on overestimating the effects of inhomogeneities on the Hubble constant
- Constraining the Hubble parameter with the 21 cm brightness temperature signal in a universe with inhomogeneities
- Cosmological perturbations on an averaged background
- Cosmological evolution driven by polytropic fluids in an inhomogeneous spacetime
- An effective -Szekeres modelling of the local Universe with Cosmicflows-4