Kerr-Newman-de Sitter Solution on DGP Brane
Abstract
We find an exact solution of Kerr-Newman-de Sitter type on the braneworld(4D) of the DGP model. When a constant 4D Ricci scalar is assumed, only zero(flat) and a positive(de-Sitter) values satisfy the Hamiltonian constraint equation coming from the extra dimension. With a Z_2-symmetry across the brane and a stationary and axisymmetric metric ansatz on the brane, we solve the constraint equation exactly in the Kerr-Schild form with de-Sitter background. In the de-Sitter background this Kerr-Schild solution is well behaved under Boyer-Lindquist transformation: the constraint equation is preserved under the transformation and so is the solution. In the non-rotating limit we show that this Kerr-Newman-de Sitter solution has the characteristic of accelerated expansion of the braneworld universe.
Keywords
Cite
@article{arxiv.0802.0057,
title = {Kerr-Newman-de Sitter Solution on DGP Brane},
author = {Daeho Lee and Ee Chang-Young and Myungseok Yoon},
journal= {arXiv preprint arXiv:0802.0057},
year = {2008}
}
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LaTeX 13 pages