A COMPARISON OF QUINTESSENCE AND NON-LINEAR BORN–INFELD SCALAR FIELD USING GOLD SUPERNOVA DATA

2005/12/21 by WEI FANG, Wei Fang, H. Q. Lu +5
Physics and Astronomy · #Cosmology #Cosmology and Gravitation Theories #Dark energy #Equation of state #Particle physics theoretical and experimental studies #Quintessence #Redshift #Scalar field #Scale factor (cosmology) #Statistical Mechanics and Entropy #Supernova #astro-ph #gr-qc #hep-th

paper · pdf · doi:10.1142/s0218271806009194

published as Int.J.Mod.Phys. D15 (2006) 1947-1962 · 17 pages, 10 figures, some references added

arxiv created 2005/12/21 · openalex publication_date 2006/11/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study the Non-Linear Born–Infeld (NLBI) scalar field model and quintessence model with two different potentials (V(ϕ) = -sϕ and [Formula: see text]). We investigate the differences between these two models. We explore the equation of state parameter w and the evolution of scale factor a(t) in both the 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 the NLBI model is slightly superior to the quintessence model.

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