Cosmological models with one extra dimension

Details Cosmological models with one extra dimension Cosmological models with one extra dimension

1999-11-30

arxiv.org/abs/gr-qc/9911122v1

Phys.Lett. B472 (2000) 273

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, 2 figures

Scientific paper

10.1016/S0370-2693(99)01416-1

We consider cosmological models in which a homogeneous isotropic universe is embedded as a 3+1 dimensional surface into a 4+1 dimensional manifold. The size of the extra dimension depends on time. It is small compared to the size of the universe only if the energy of gravitational self-interaction of the universe through the compact extra dimension dominates over all other kinds of energy. The self-interaction energy gives the main contribution into the Friedmann equation, which governs the dynamics of the scale factor of the universe.

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