A Comparison of Quintessence and Nonlinear Born-Infeld Scalar Field Using Gold Supernova data

Details A Comparison of Quintessence and Nonlinear Born-Infeld Scalar Field Using Gold Supernova data A Comparison of Quintessence and Nonlinear Born-Infeld Scalar Field Using Gold Supernova data

2005-12-11

arxiv.org/abs/hep-th/0512120v2

Int.J.Mod.Phys. D15 (2006) 1947-1962

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 10 figures, some references added

Scientific paper

10.1142/S0218271806009194

We study the Non-Linear Born-Infeld(NLBI) scalar field model and quintessence model with two different potentials($V(\phi)=-s\phi$ and ${1/2}m^2\phi^2$). We investigate the differences between those two models. We explore the equation of state parameter w and the evolution of scale factor $a(t)$ in both NLBI scalar field and quintessence model. The present age of universe and the transition redshift are also obtained. We use the Gold dataset of 157 SN-Ia to constrain the parameters of the two models. All the results show that NLBI model is slightly superior to quintessence model.

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