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Cosmology of some holographic dark energy models in chameleonic Brans-Dicke gravity

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Abstract

We study some holographic dark energy models in chameleonic Brans-Dicke field gravity by taking interaction between the dark energy components in FRW universe. Firstly, we take the holographic dark energy model with Granda-Oliveros cut-off and discuss interacting as well as non-interacting cases. Secondly, we consider the holographic dark energy with both power-law as well as logarithmic corrections using Hubble scale as infrared cut-off in interacting case only. We describe the evolution of some cosmological parameters for these holographic dark energy models. It is concluded that the phantom crossing can be achieved more easily in the presence of chameleonic Brans-Dicke field as compared to simple Brans-Dicke as well as Einstein’s gravity. Also, the deceleration parameter strongly confirms the accelerated expanding behavior of the universe.

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Correspondence to M. Sharif.

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Sharif, M., Waheed, S. Cosmology of some holographic dark energy models in chameleonic Brans-Dicke gravity. Astrophys Space Sci 348, 261–273 (2013). https://doi.org/10.1007/s10509-013-1543-x

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  • DOI: https://doi.org/10.1007/s10509-013-1543-x

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