Cosmological constant and gravitational theory on D-brane
High Energy Physics - Theory
2009-11-10 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
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.
Keywords
Cite
@article{arxiv.hep-th/0307151,
title = {Cosmological constant and gravitational theory on D-brane},
author = {Tetsuya Shiromizu and Kazuya Koyama and Takashi Torii},
journal= {arXiv preprint arXiv:hep-th/0307151},
year = {2009}
}
Comments
6 pages, minor corrections, accepted for publication in Physical Review D