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2008

Self-accelerating solutions in the cascading DGP braneworld

Minamitsuji, Masato

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The self-accelerating branch of the Dvali-Gabadadze-Porrati (DGP) five-dimensional braneworld has provided a compelling model for the current cosmic acceleration.

Recent observations, however, have not favored it so much.
We discuss the solutions which contain a de Sitter 3-brane in the cascading DGP braneworld model, which is a kind of higher-dimensional generalizations of the DGP model,where a $p$-dimensional brane is placed on a $(p+1)$-dimensional one and the $p$-brane action contains the $(p+1)$-dimensional induced scalar curvature term.
In the simplest six-dimensional model, we derive the solutions.

Self-accelerating solutions in the cascading DGP braneworld · Around

Built on

S. Perlmutter et al., Nature 391 (1998) 51; A. Riess et al., Astron. J., 116 (1998) 1009,
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G. R. Dvali, G. Gabadadze and M. Porrati, Phys. Lett. B 485 (2000) 208
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C. Deffayet, Phys. Lett. B 502 (2001) 199
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C. Deffayet, G. R. Dvali and G. Gabadadze, Phys. Rev. D 65 (2002) 044023
2002
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