Abstract.
We have investigated the Brans-Dicke chameleon theory of gravity and obtained exact solutions of the scale factor a(t) , the scalar field \( \phi\)(t) , an arbitrary function f (\( \phi\)) which interact with the matter Lagrangian in the action of the Brans-Dicke chameleon theory and the potential V(\( \phi\)) for different epochs of the cosmic evolution. We plot the functions a(t) , \( \phi\)(t) , f (t) and V(\( \phi\)) for different values of the Brans-Dicke parameter. In our models, there is no accelerating solution, only a decelerating one with q > 0 . The physical cosmological distances have been investigated carefully. Further, the statefinder parameters pair and deceleration parameter are discussed.
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Jamil, M., Hussain, I. & Momeni, D. Cosmic evolution in Brans-Dicke chameleon cosmology. Eur. Phys. J. Plus 126, 80 (2011). https://doi.org/10.1140/epjp/i2011-11080-2
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DOI: https://doi.org/10.1140/epjp/i2011-11080-2