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

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

2006-05-16

arxiv.org/abs/astro-ph/0605388v1

Int.J.Mod.Phys.A22:1301-1316,2007

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures

Scientific paper

10.1142/S0217751X07035173

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 approximately equal to -1, quintessence and phantom models are indistinguishable through the Hubble parameter. Finally, inflation rather than big-rip has been found to be the generic feature of phantom cosmology.

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