Volume 61, Number 5, March 2003
|Page(s)||715 - 720|
|Section||Geophysics, astronomy, and astrophysics|
|Published online||01 February 2003|
Time-dependent cosmological constant in the Jackiw-Teitelboim cosmology
Instituto de Física, Universidade Federal do Rio de Janeiro - RJ 21945-970, Brazil
2 Centro Brasileiro de Pesquisas Físicas - Rua Dr. Xavier Sigaud 150 Urca 22290-180 Rio de Janeiro, RJ, Brazil
Accepted: 20 December 2002
We study the obtainment of a time-dependent cosmological constant at in a model based on the Jackiw-Teitelboim cosmology. We show that the cosmological term goes to zero asymptotically and can induce a nonsingular behavior at the origin.
PACS: 98.80.Bp – Origin and formation of the Universe / 98.80.Cq – Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)
© EDP Sciences, 2003
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