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A Varying-alpha Brane World Cosmology

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arxiv hep-th/0108237 v2 pith:X54VSC4W submitted 2001-08-31 hep-th astro-phgr-qc

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classification hep-thastro-phgr-qc
keywords cosmologybranechargecosmologicalelectricvaryingworldbekenstein
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We study the brane world cosmology in the RS2 model where the electric charge varies with time in the manner described by the varying fine-structure constant theory of Bekenstein. We map such varying electric charge cosmology to the dual variable-speed-of-light cosmology by changing system of units. We comment on cosmological implications for such cosmological models.

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  1. Revisiting Varying Speed of Light in Cosmology: Insights from the Friedmann-Lema\^itre-Robertson-Walker Metric

    physics.gen-ph 2025-05 reject novelty 2.0 of 10

    A varying speed of light in FLRW is presented as gauge freedom via the lapse function, but the key variational derivation omits the √-g measure and the claimed Hubble-tension resolution contradicts Eq. (30).

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