Towards a covariant model for cosmic self-acceleration

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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10 pages, no figures; v2: version published in JHEP

Scientific paper

10.1088/1126-6708/2007/10/012

An explicitly covariant formulation is presented of a modified DGP scenario
proposed recently [1], to avoid the instability of the self-accelerating
branch. It is based on the introduction of a bulk scalar field with appropriate
non-minimal coupling to the bulk Einstein-Hilbert term. The method is general
and may be applied to other models as well.

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