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arXiv · hep-th/0404011

Brane World Cosmology

Philippe Brax·Carsten van de Bruck·Anne--Christine Davis
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Abstract

Recent developments in the physics of extra dimensions have opened up new avenues to test such theories. We review cosmological aspects of brane world scenarios such as the Randall--Sundrum brane model and two--brane systems with a bulk scalar field. We start with the simplest brane world scenario leading to a consistent cosmology: a brane embedded in an Anti--de Sitter space--time. We generalise this setting to the case with a bulk scalar field and then to two--brane systems. We discuss different ways of obtaining a low--energy effective theory for two--brane systems, such as the moduli space approximation and the low--energy expansion. A comparison between the different methods is given. Cosmological perturbations are briefly discussed as well as early universe scenarios such as the cyclic model and the born--again brane world model. Finally we also present some physical consequences of brane world scenarios on the cosmic microwave background and the variation of constants.

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Philippe Brax, Carsten van de Bruck, Anne--Christine Davis. 2004-04-02. Brane World Cosmology. https://doi.org/10.1088/0034-4885%2F67%2F12%2Fr02

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