Phantom cosmology with a nonlinear Born-Infeld type scalar field

被引：40
|
作者：
Lu, HQ [1 ]
机构：
[1] Shanghai Univ, Dept Phys, Shanghai 200436, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2005年 / 14卷 / 02期
基金：
中国国家自然科学基金;
关键词：
dark energy; Born-Infeld type scalar field; phantom cosmology;
D O I：
10.1142/S021827180500513X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Recent many physicists suggest that the dark energy in the universe might result from the Born-Infeld (B-I) type scalar field of string theory. The universe of B-I type scalar field with potential can undergo a phase of accelerating expansion. The corresponding equation of state parameter lies in the range of -1 < omega < -1/3. The equation of state parameter of B-I type scalar field without potential lies in the range of 0 <= omega <= 1. We find that weak energy condition and strong energy condition are violated for phantom B-I type scalar field. The equation of state parameter lies in the range of omega < -1.
引用
收藏
页码：355 / 362
页数：8
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