Anisotropic perturbations due to dark energy

2006/02/16 by Richard A. Battye, A. Moss, Adam Moss · 58 citations
Physics and Astronomy · #Adiabatic process #Anisotropy #Astrophysics #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Galaxies: Formation, Evolution, Phenomena #Geometry #Invariant (physics) #Mathematical physics #Physics #Quantum mechanics #Rigidity (electromagnetism) #Rotational invariance #Symmetry (geometry) #Tensor (intrinsic definition) #Theoretical physics #Universe #astro-ph

paper · pdf · doi:10.1103/physrevd.74.041301

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 74(4) (American Physical Society) · 4 pages, 3 figures

arxiv created 2006/02/16 · openalex publication_date 2006/08/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

A variety of observational tests seem to suggest that the Universe is anisotropic. This is incompatible with the standard dogma based on adiabatic, rotationally invariant perturbations. We point out that this is a consequence of the standard decomposition of the stress-energy tensor for the cosmological fluids, and that rotational invariance need not be assumed, if there is elastic rigidity in the dark energy. The dark energy required to achieve this might be provided by point symmetric domain wall network with P/\ensuremathρ=\ensuremath-2/3, although the concept is more general. We illustrate this with reference to a model with cubic symmetry and discuss various aspects of the model.

Citations

• Examination of Evidence for a Preferred Axis in the Cosmic Radiation Anisotropy
• Measurements of Ω and Λ from 42 High‐Redshift Supernovae
• Is the Low-ℓMicrowave Background Cosmic?
• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
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• High resolution foreground cleaned CMB map from WMAP
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• The 2dF Galaxy Redshift Survey: power-spectrum analysis of the final data set and cosmological implications
• On the Viability of Bianchi Type VIIhModels with Dark Energy

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• Constraints on a Bianchi type I spacetime extension of the standard ΛCDM model
• Measuring dark energy spatial inhomogeneity with supernova data
• Fluctuation of the Hubble parameter