Brane-world cosmology
Abstract
A simple model of the brane-world cosmology has been proposed, which is characterized by four parameters, namely, the bulk cosmological constant, the spatial curvature of the universe, the radiation strength arising from bulk space-time and the breaking parameter of Bbb Z2-symmetry. The bulk space-time is assumed to be locally static five-dimensional analogue of the Schwarzschild-Anti-de Sitter space-time, and then the location of three-brane is determined by the metric junction. The resulting Friedmann equation recovers the standard cosmology, and a new term arises if Bbb Z2-symmetry is not assumed, which behaves as a cosmological term in the early universe, next turns to a negative curvature term, and finally damps rapidly.
- Publication:
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Journal of High Energy Physics
- Pub Date:
- September 2000
- DOI:
- 10.1088/1126-6708/2000/09/014
- arXiv:
- arXiv:gr-qc/9912002
- Bibcode:
- 2000JHEP...09..014I
- Keywords:
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- General Relativity and Quantum Cosmology
- E-Print:
- 4 pages, no figures