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On T-Duality in Brane Gas Cosmology

Timon Boehm·Robert Brandenberger
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Abstract

In the context of homogeneous and isotropic superstring cosmology, the T-duality symmetry of string theory has been used to argue that for a background space-time described by dilaton gravity with strings as matter sources, the cosmological evolution of the Universe will be nonsingular. In this Letter we discuss how T-duality extends to brane gas cosmology, an approximation in which the background space-time is again described by dilaton gravity with a gas of branes as a matter source. We conclude that the arguments for nonsingular cosmological evolution remain valid.

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Timon Boehm, Robert Brandenberger. 2003-04-22. On T-Duality in Brane Gas Cosmology. https://doi.org/10.1088/1475-7516%2F2003%2F06%2F008

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