Issue |
Europhys. Lett.
Volume 61, Number 5, March 2003
|
|
---|---|---|
Page(s) | 715 - 720 | |
Section | Geophysics, astronomy, and astrophysics | |
DOI | https://doi.org/10.1209/epl/i2003-00100-3 | |
Published online | 01 February 2003 |
Time-dependent cosmological constant in the Jackiw-Teitelboim cosmology
1
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
Corresponding authors: msalves@if.ufrj.br barcelos@if.ufrj.br novello@cbpf.br jsalim@cbpf.br
Received:
6
September
2002
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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