Cosmological constant and gravitational theory on D-brane

Details Cosmological constant and gravitational theory on D-brane Cosmological constant and gravitational theory on D-brane

2003-07-17

arxiv.org/abs/hep-th/0307151v2

Phys.Rev. D68 (2003) 103513

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, minor corrections, accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.68.103513

In a toy model we derive the gravitational equation on a self-gravitating curved D-brane. The effective theory on the brane is drastically changed from the ordinal Einstein equation. The net cosmological constant on the brane depends on a tuning between the brane tension and the brane charges. Moreover, non-zero matter stress tensor exists if the net cosmological constant is not zero. This fact indicates a direct connection between matters on the brane and the dark energy.

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