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arXiv · hep-th/9911165

Brane-world solutions, standard cosmology, and dark radiation

Shinji Mukohyama
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Abstract

New exact solutions of brane-world cosmology are given. These solutions include an arbitrary constant C, which is determined by the geometry outside the brane and which affects the cosmological evolution in the brane-world. If C is zero, then the standard cosmology governs the brane-world as a low-energy effective cosmological theory. However, if C is not zero, then even in low-energy the brane-world cosmology gives predictions different from the standard one. The difference can be understood as ``dark radiation'', which is not real radiation but alters cosmological evolutions.

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Shinji Mukohyama. 1999-12-17. Brane-world solutions, standard cosmology, and dark radiation. https://doi.org/10.1016/s0370-2693(99)01505-1

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