Acceleration of the universe with a simple trigonometric potential
Astrophysics
2009-11-11 v1 General Relativity and Quantum Cosmology
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 dust dominated model, we show that this sign flip in q can be obtained by a simple trigonometric patential. The early matter dominated model expands with q=1/2 as desired and enters a negative q phase quite late during the evolution.
Keywords
Cite
@article{arxiv.astro-ph/0505121,
title = {Acceleration of the universe with a simple trigonometric potential},
author = {Narayan Banerjee and Sudipta Das},
journal= {arXiv preprint arXiv:astro-ph/0505121},
year = {2009}
}
Comments
9 pages; 5 figures; to be published in GRG Journal