Abstract
Here we investigate the holographic dark energy model in the framework of FRW cosmology where the Newtonian gravitational constant, G, is varying with cosmic time. Using the complementary astronomical data which support the time dependency of G, the evolutionary treatment of EoS parameter and energy density of dark energy model are calculated in the presence of time variation of G. It has been shown that in this case, the phantom regime can be achieved at the present time. We also calculate the evolution of G-corrected deceleration parameter for holographic dark energy model and show that the dependency of G on the comic time can influence on the transition epoch from decelerated expansion to the accelerated phase. Finally we perform the statefinder analysis for G-corrected holographic model and show that this model has a shorter distance from the observational point in s–r plane compare with original holographic dark energy model.
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Acknowledgements
This work has been supported by Research Institute for Astronomy and Astrophysics of Maragha (RIAAM) under research project 1/2782-52. Also, we are grateful to A. Khodam-Mohammadi for helpful discussions.
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Malekjani, M., Honari-Jafarpour, M. G-corrected holographic dark energy model. Astrophys Space Sci 346, 545–552 (2013). https://doi.org/10.1007/s10509-013-1475-5
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DOI: https://doi.org/10.1007/s10509-013-1475-5