2 papers
hep-th2004
What is needed of a tachyon if it is to be the dark energy?
Edmund J. Copeland, Mohammad R. Garousi, M. Sami +1
We study a dark energy scenario in the presence of a tachyon field with potential and a barotropic perfect fluid. The cosmological dynamics crucially depends on the asym…
hep-th2003
Cosmological Dynamics of Phantom Field
Parampreet Singh, M. Sami, Naresh Dadhich
We study the general features of the dynamics of the phantom field in the cosmological context. In the case of inverse coshyperbolic potential, we demonstrate that the phantom fiel…