Friedmann branes with variable tension

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dc.creatorGergely, László Á.
dc.date2008-06-24
dc.date2008-09-22
dc.date.accessioned2026-07-07T11:51:57Z
dc.date.available2026-07-07T11:51:57Z
dc.descriptionWe introduce brane-worlds with non-constant tension, strenghtening the analogy with fluid membranes, which exhibit a temperature-dependence according to the empirical law established by Eötvös. This new degree of freedom allows for evolving gravitational and cosmological constants, the latter being a natural candidate for dark energy. We establish the covariant dynamics on a brane with variable tension in full generality, by considering asymmetrically embedded branes and allowing for non-standard model fields in the 5-dimensional space-time. Then we apply the formalism for a perfect fluid on a Friedmann brane, which is embedded in a 5-dimensional charged Vaidya-Anti de Sitter space-time.
dc.description12 pages, to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0806.3857
dc.identifierhttp://arxiv.org/abs/0806.3857
dc.identifierPhys.Rev.D78:084006,2008
dc.identifierdoi:10.1103/PhysRevD.78.084006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204069
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleFriedmann branes with variable tension
dc.typetext

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