Interacting entropy-corrected new agegraphic dark energy in Brans–Dicke cosmology |
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Authors: | Email author" target="_blank">K?KaramiEmail author A?Sheykhi M?Jamil Z?Azarmi M?M?Soltanzadeh |
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Institution: | 1.Department of Physics,University of Kurdistan,Sanandaj,Iran;2.Research Institute for Astronomy and Astrophysics of Maragha (RIAAM),Maragha,Iran;3.Department of Physics,Shahid Bahonar University,Kerman,Iran;4.Center for Advanced Mathematics and Physics (CAMP),National University of Sciences and Technology (NUST),Islamabad,Pakistan;5.The Abdus Salam International Center for Theoretical Physics (ICTP),Trieste,Italy |
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Abstract: | Motivated by a recent work of one of us (Sheykhi in Phys Rev D 81: 023525, 2010), we extend it by using quantum (or entropy)
corrected new agegraphic dark energy in the Brans–Dicke cosmology. The correction terms are motivated from the loop quantum
gravity which is one of the competitive theories of quantum gravity. Taking the non-flat background spacetime along with the
conformal age of the universe as the length scale, we derive the dynamical equation of state of dark energy and the deceleration
parameter. An important consequence of this study is the phantom divide scenario with entropy-corrected new agegraphic dark
energy. Moreover, we assume a system of dark matter, radiation and dark energy, while the later interacts only with dark matter.
We obtain some essential expressions related with dark energy dynamics. The cosmic coincidence problem is also resolved in
our model. |
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