Inflation Induced by Vacuum Energy and Graceful Exit from it

Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology

Scientific paper

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15 pages, LaTex file, no figures. Discussion on time dependent cosmological constant in section two clarified. References adde

Scientific paper

10.1142/S0217732301006053

Motivated by brane cosmology we solve the Einstein equations with a time
dependent cosmological constant. Assuming that at an early epoch the vacuum
energy scales as $1/logt $, we show that the universe passes from a fast
growing phase (inflation) to an expanding phase in a natural way.

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