P Lorén-Aguilar et al 2003 Class. Quantum Grav. 20 3885 doi:10.1088/0264-9381/20/18/302
P Lorén-Aguilar1, E García-Berro1,2, J Isern2,3 and Yu A Kubyshin4,5
Show affiliationsWe derive the formulae for the time variation of the gravitational 'constant' G and of the fine structure 'constant' α in various models with extra dimensions and analyse their consistency with the available observational data for distant supernovae. We find that the reported variation of α translates into a small variation of G that makes distant supernovae to appear brighter, in contrast to recent observations of high z supernovae. The significance of these results within the framework of some cosmological scenarios is also discussed. We find, however, that the magnitude of the effect is not large enough to safely discard the models with extra dimensions studied here.
04.50.-h Higher-dimensional gravity and other theories of gravity
Issue 18 (21 September 2003)
Received 26 February 2003, in final form 30 May 2003
Published 20 August 2003
P Lorén-Aguilar et al 2003 Class. Quantum Grav. 20 3885
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