Sourced Friedmann equations with holographic energy density

Details Sourced Friedmann equations with holographic energy density Sourced Friedmann equations with holographic energy density

2005-02-15

arxiv.org/abs/hep-th/0502128v3

Phys.Lett. B626 (2005) 1-6

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, final version to appear in PLB

Scientific paper

10.1016/j.physletb.2005.09.003

We reexamine cosmological applications of the holographic energy density in the framework of sourced Friedmann equations. This framework is suitable because it can accommodate a macroscopic interaction between holographic and ordinary matter naturally. In the case that the holographic energy density decays into dust matter, we propose a microscopic mechanism to generate an accelerating phase. Actually, the cosmic anti-friction arisen from the decay process induces acceleration. For examples, we introduce two IR cutoffs of Hubble horizon and future event horizon to test this framework. As a result, it is shown that the equations of state for the holographic energy density are determined to be the same negative constants as those for the dust matter.

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