2002/08/31 by Arthur Lue · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.67.064004
published as Phys.Rev. D67 (2003) 064004 · 15 pages, 4 figures, RevTeX. References added
arxiv created 2002/09/24 · openalex publication_date 2003/03/17 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We detail the global structure of the five-dimensional bulk for the cosmological evolution of Dvali-Gabadadze-Porrati brane worlds. The picture articulated here provides a framework and intuition for understanding how metric perturbations leave (and possibly reenter) the brane universe. A bulk observer sees the brane world as a relativistically expanding bubble, viewed either from the interior (in the case of the Friedmann-Lema\\itre-Robertson-Walker phase) or the exterior (the self-accelerating phase). Shortcuts through the bulk in the first phase can lead to an apparent brane causality violation and provide an opportunity for the evasion of the horizon problem found in conventional four-dimensional cosmologies. Features of the global geometry in the latter phase anticipate a depletion of power for linear metric perturbations on large scales.