Inflation Induced by Vacuum Energy and Graceful Exit from it
arXiv:gr-qc/0103101 · doi:10.1142/S0217732301006053
Abstract
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 , we show that the universe passes from a fast growing phase (inflation) to an expanding phase in a natural way.
15 pages, LaTex file, no figures. Discussion on time dependent cosmological constant in section two clarified. References added