A Higher dimensional cosmological model with a phantom field

We consider a higher dimensional gravity theory with a negative kinetic energy scalar field and a cosmological constant. We find that the theory admits an exact cosmological solution for the scale factor of our universe. It has the feature that the universe undergoes a transition from deceleration to acceleration at some finite time. This transition time can be interpreted as that of recent acceleration of our universe.

98.80.Es
98.80.-k
04.50.-h
11.10.Kk
cosmology
higher dimensional gravity
phantom field
coincidence problem
cosmological model
phantom

References(28)

Figures(2)

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