Varying Fundamental Constants from a String-inspired Brane World Model

Details Varying Fundamental Constants from a String-inspired Brane World Model Varying Fundamental Constants from a String-inspired Brane World Model

2002-10-09

arxiv.org/abs/hep-th/0210086v2

Astrophys.Space Sci. 283 (2003) 487-492

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 1 fig., LaTeX (Kluwer style). Contribution to JENAM 2002 (VFC workshop) Corrections added to match final version

Scientific paper

10.1023/A:1022508818739

We report results on the construction of cosmological braneworld models in the context of the Einstein-Gauss-Bonnet gravity, which include the leading correction to the Einstein-Hilbert action suggested by superstring theory. We obtain and study the equations governing the dynamics of the standard cosmological models. We find that they can be written in the same form as in the case of the Randall-Sundrum model but with time-varying four-dimensional gravitational and cosmological constants. Finally, we discuss the cosmological evolution predicted by these models and their compatibility with observational data.

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