精质模型和非线性Born-Infeld标量场模型鬼场的比较

O4; This paper studies phantom linear scalar field (LSF) and phantom non-linear Born-Infeld (NLBI) scalar field with square potential of the form V(φ) =1/2 m2φ2. The equation of state parameter w(z), and evolution of scale factor a(t) in both phantom LSF and phantom NLBI scalar model are explored. T...

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Bibliographic Details
Published in上海大学学报（英文版） Vol. 12; no. 5; pp. 405 - 409
Main Authors 周建华, 陆惠卿, 方伟, 魏晨星
Format Journal Article
LanguageChinese
Published Department of Physics, College of Sciences, Shanghai University, Shanghai 200444, P. R. China 2008
Subjects
phantom linear scalar field (LSF)
dark energy
phantom non-linear Born-Infeld (NLBI) type scalar field
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ISSN1007-6417

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Summary:O4; This paper studies phantom linear scalar field (LSF) and phantom non-linear Born-Infeld (NLBI) scalar field with square potential of the form V(φ) =1/2 m2φ2. The equation of state parameter w(z), and evolution of scale factor a(t) in both phantom LSF and phantom NLBI scalar model are explored. The age of universe Hot and the transition redshift Z are obtained. The Gold data set of 157-SN-Ia is used to constrain parameters of the two models by numerical calculation. The phantom LSF is slightly better than the phantom NLBI type scalar field model for a large m. Although a smaller m corresponding to a slower rolling of field φ better fits the observation data, the difference between phantom NLBI scalar field and phantom LSF is not distinct in this case.
ISSN:1007-6417