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Acceleration of the universe with a simple trigonometric potential
- Source :
- General Relativity and Gravitation; October 2005, Vol. 37 Issue: 10 p1695-1703, 9p
- Publication Year :
- 2005
-
Abstract
- Abstract: In this paper, we investigate the quintessence model with a minimally coupled scalar field in the context of recent supernovae observations. By choosing a particular form of the deceleration parameter q, which gives an early deceleration and late time acceleration for the dust dominated model, we show that this sign flip in q can be obtained by a simple trigonometric potential. The early matter dominated model expands with q = 1/2 as desired and enters a negative q phase quite late during the evolution.
Details
- Language :
- English
- ISSN :
- 00017701 and 15729532
- Volume :
- 37
- Issue :
- 10
- Database :
- Supplemental Index
- Journal :
- General Relativity and Gravitation
- Publication Type :
- Periodical
- Accession number :
- ejs7944094
- Full Text :
- https://doi.org/10.1007/s10714-005-0152-6