Cosmological Dynamics of Phantom Field

By Parampreet Singh, M.Sami, N. Dadhich. 2003

423 citations recorded by the source corpus.

We study the general features of a dynamics of a phantom field in the cosmological context. In the case of an inverse coshyperbolic potential, we demonstrate that the phantom field can successfully drive the observed current accelerated expansion of the Universe with the equation of state parameter ${w}_{\ensuremath{\varphi}}l\ensuremath{-}1.$ The de Sitter universe turns out to be the late time attractor of the model. The main features of the dynamics are independent of the initial conditions and the parameters of the model. The model fits the supernova data very well, allowing for $\ensuremath{-}2.4l{w}_{\ensuremath{\varphi}}l\ensuremath{-}1$ at a 95% confidence level.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/5fdea5e238a46400ffa1ecd073cb907ad2d1b4e9

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Phantom energy traversable wormholes (2005, background): “However, it has been shown that in certain models the presence of phantom energy does not lead to the above-mentioned doomsday [19, 20, 21, 22, 23, 24].”