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Reconstructing the expansion history of the Universe with a one-fluid approach

Assuming that the Universe is filled by one single fluid, we present in the context of General Relativity a possible explanation for the acceleration of the Universe. We use ordinary thermodynamics and the fact that small matter perturbations barely propagate in our Universe, to derive a general solution for a single fluid in which the speed of sound vanishes. We find a model that contains $Λ$CDM as a special case, and is compatible with current observational data.

preprint2011arXivOpen access
Orlando LuongoHernando Quevedo
gr-qc
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Open access2 authors1 topic
Imported metadata coverageMissing code, dataset, citation and institution fields are tracked without dominating the paper.Details
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Orlando LuongoHernando Quevedo

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