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arXiv · 1301.3098

Nonlinear multidimensional gravity and the Australian dipole

K. A. Bronnikov·V. N. Melnikov·S. G. Rubin·I. V. Svadkovsky
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Abstract

The existing observational data on possible variations of fundamental physical constants (FPC) confirm more or less confidently only a variability of the fine structure constant $\alpha$ in space and time. A model construction method is described, where variations of $\alpha$ and other FPCs (including the gravitational constant $G$) follow from the dynamics of extra space-time dimensions in the framework of curvature-nonlinear multidimensional theories of gravity. An advantage of this method is a unified approach to variations of different FPCs. A particular model explaining the observable variations of $\alpha$ in space and time has been constructed. It comprises a FRW cosmology with accelerated expansion, perturbed due to slightly inhomogeneous initial data.

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K. A. Bronnikov, V. N. Melnikov, S. G. Rubin, I. V. Svadkovsky. 2013-01-14. Nonlinear multidimensional gravity and the Australian dipole. https://doi.org/10.1007/s10714-013-1601-2

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