Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 7, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2015/07/036
Keywords
dark matter theory; cosmological perturbation theory; dark energy theory
Funding
- NSF CREST award [HRD-1345219]
- NASA grant [NNX09AV07A]
- German Academic Exchange Service (DAAD)
- NASA [NNX09AV07A, 107438] Funding Source: Federal RePORTER
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Scalar cosmological perturbations are investigated in the framework of a model with interacting dark energy and dark matter. In addition to these constituents, the inhomogeneous Universe is supposed to be filled with the standard noninteracting constituents corresponding to the conventional ACDM model. The interaction term is chosen in the form of a linear combination of dark sector energy densities with evolving coefficients. The methods of discrete cosmology are applied, and strong theoretical constraints on the parameters of the model are derived. A brief comparison with observational data is performed.
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