Inflation is perhaps the generic feature of phantom field, not the big-rip

被引:5
|
作者
Sanyal, Abhik Kumar [1 ]
机构
[1] Jangipur C oll, Dept Phys, Murshidabad 742213, W Bengal, India
来源
关键词
cosmology; dark energy; phantom field;
D O I
10.1142/S0217751X07035173
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
A class of solutions for phantom field corresponding to a generalized k-essence Lagrangian has been presented, employing a simple method which provides the scope to explore many such. All the solutions having dynamical state parameter are found to touch the magic line w = -1 asymptotically. The solutions with constant equation of state can represent phantom, quitessence or an ordinary scalar field cosmologies depending on the choice of a couple of parameters of the theory. For w approximate to -1, quintessence and phantom models are indistinguishable through the Hubble parameter. Finally, it appears that inflation rather than big-rip is the generic feature of phantom cosmology.
引用
收藏
页码:1301 / 1315
页数:15
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