Can Cosmic Structure form without Dark Matter?

Abstract

One of the prime pieces of evidence for dark matter is the observation of large overdense regions in the universe. Since we know from the cosmic microwave background that the regions that contained the most baryons when the universe was ~400,000 years old were overdense by only one part in ten thousand, perturbations had to have grown since then by a factor greater than $(1+z_{\ast })\simeq 1180$ where $z_{\ast }$ is the epoch of recombination. This enhanced growth does not happen in general relativity, so dark matter is needed in the standard theory. We show here that enhanced growth can occur in alternatives to general relativity, in particular in Bekenstein's relativistic version of MOdified Newtonian Dynamics (MOND). The vector field introduced in that theory for a completely different reason plays a key role in generating the instability that produces large cosmic structures today.

5 pages, 3 figures

References in corpus (14)

• Cosmological parameters from SDSS and WMAP
• The 3D power spectrum of galaxies from the SDSS
• Relativistic gravitation theory for the MOND paradigm
• Modified Newtonian Dynamics as an Alternative to Dark Matter
• Weak lensing mass reconstruction of the interacting cluster 1E0657-558: Direct evidence for the existence of dark matter
• Einstein-Aether Waves
• Large Scale Structure in Bekenstein's theory of relativistic Modified Newtonian Dynamics
• A stratified framework for scalar-tensor theories of Modified Dynamics
• Gravitational Theory, Galaxy Rotation Curves and Cosmology without Dark Matter
• Can We See Lorentz-Violating Vector Fields in the CMB?
• New constraints on MOND from galaxy clusters
• The Vector-Tensor nature of Bekenstein's relativistic theory of Modified Gravity
• TeVeS Cosmology : Covariant formalism for the background evolution and linear perturbation theory
• Squeezing MOND into a Cosmological Scenario

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• Modified Gravity and Cosmology
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• Cosmology and Fundamental Physics with the Euclid Satellite
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• Testing General Relativity in Cosmology
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• Gravity Gets There First with Dark Matter Emulators
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