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arXiv · 1403.6178

Investigation of Bouncing Universe and Phantom Crossing in Modified Gravity Coupled with Weyl Tensor and its Reconstruction

Mohammad Ghanaatian·Farzad Milani
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Abstract

In this study, FRW cosmology in modified gravity containing arbitrary function $f(R)$ is taken into consideration when our action are coupled with Weyl tensor. It is indicated that the bouncing solution emerges in the model while the equation of state (EoS) parameter crosses the phantom divider. In this research, cosmological usage of the most promising candidates of dark energy in the framework of $f(R)$ theory coupled by Weyl tensor is explored. A $f(R)$ gravity model in the spatially flat FRW universe according to the ordinary version of the holographic dark energy model, which describes accelerated expansion of the universe is reconstructed. The equation of state parameter of the corresponding Weyl gravity models are obtained as well. We conclude that the holographic and Weyl gravity models can behave like phantom or quintessence models, whereas the equation of state parameter of the models can transit from quintessence state to phantom regime as shown recent observations.

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Mohammad Ghanaatian, Farzad Milani. 2014-04-03. Investigation of Bouncing Universe and Phantom Crossing in Modified Gravity Coupled with Weyl Tensor and its Reconstruction. https://doi.org/10.1007/s10714-014-1789-9

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