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Bulk gravitons from a cosmological brane

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arxiv hep-th/0306281 v2 pith:4QDVZEE5 submitted 2003-06-27 hep-th astro-phhep-ph

David Langlois , Lorenzo Sorbo This is my paper · ORCID
classification hep-thastro-phhep-ph
keywords bulkgravitonsbranecosmologicaldarkemissionradiationamount
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We investigate the emission of gravitons by a cosmological brane into an Anti de Sitter five-dimensional bulk spacetime. We focus on the distribution of gravitons in the bulk and the associated production of `dark radiation' in this process. In order to evaluate precisely the amount of dark radiation in the late low-energy regime, corresponding to standard cosmology, we study numerically the emission, propagation and bouncing off the brane of bulk gravitons.

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  1. Massive Graviton Dark Matter from a Gapped Continuum

    hep-th 2026-07 conditional novelty 6.0 of 10

    Radiative corrections pull an isolated, long-lived massive graviton out of the gapped linear-dilaton continuum, giving a sub-MeV dark-matter candidate that can coexist with a holographic fluid component.

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