p-Brane cosmology and phases of Brans-Dicke theory with matter
Chanyong Park, Sang-Jin Sin
Abstract
We study the effect of the solitonic degrees of freedom in string cosmology following the line of Rama. The gas of solitonic p-brane is treated as a perfect fluid in a Brans-Dicke type theory. In this paper, we find exact cosmological solutions for any Brans-Dicke parameter ω and for general parameter γ of equation of state and classify the cosmology of the solutions on a parameter space of γ and ω.
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