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Title: Dark Radiation Dynamics on the Brane
Authors: Neves, Rui
Vaz, Cenalo
Keywords: High Energy Physics
General Relativity
Quantum Cosmology
Issue Date: 18-Jul-2002
Publisher: American Physical Society
Citation: Neves, R., & Vaz, C. (2002). Dark radiation dynamics on the brane. Physical Review D 66 (12), 124002-124014
Series/Report no.: 12;
Abstract: We investigate the dynamics of a spherically symmetric vaccum on a Randall and Sundrum 3-brane world. Under certain natural conditions, the effective Einstein equations on the brane form a closed system for spherically symmetric dark radiation. We determine exact dynamical and inhomogeneous solutions, which are shown to depend on the brane cosmological constant, on the dark radiation tidal charge and on its initial energy configuration. We identify the conditions defining these solutions as singular or as globally regular. Finally, we discuss the confinement of gravity to the vicinity of the brane and show that a phase transition to a regime where gravity is not bound to the brane may occur at short distances during the collapse of positive dark energy density on a realistic de Sitter brane.
Peer Reviewed: yes
metadata.dc.identifier.doi: 10.1103/PhysRevD.66.124002
ISSN: 2470-0010
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Appears in Collections:DCT - Artigos/Papers

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