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Brane-world cosmology

Daisuke Ida1

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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.


Keywords

Classical Theories of Gravity

Extra Large Dimensions

 

E-print Number: gr-qc/9912002

Cited: by |

Refers: to

PACS

11.25.Wx String and brane phenomenology

98.80.Es Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc)

Subjects

Gravitation and cosmology

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 09 ( 1 September 2000)

Received 19 June 2000, accepted for publication 11 September 2000

Published 10 October 2000



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