Matter in the Bulk and its Consequences on the Brane: A Possible Source of Dark Energy

Details Matter in the Bulk and its Consequences on the Brane: A Possible Source of Dark Energy Matter in the Bulk and its Consequences on the Brane: A Possible Source of Dark Energy

2007-07-02

arxiv.org/abs/0707.0199v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

3 pages, no figure

Scientific paper

The usual brane world scenario with anti de Sitter bulk has been generalized by considering a general form of energy momentum tensor in the bulk. The modified Einstein equation on the brane has been constructed. Two examples have been cited of which, the first one shows the usual brane equations when matter in the bulk is a negative cosmological constant. In the second example, the bulk matter is in the form of perfect fluid and as a result, an effective perfect fluid is obtained in the brane. Also it is noted that the effect of the dust bulk on the brane shows a dark energy behaviour and may be a possible explanation of the dark energy from the present day observational point of view.

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