مشخصات پژوهش

عنوان	Holographic dark energy in Brans-Dicke cosmology with chameleon scalar field
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Brans–Dicke gravity; Chameleon scalar field; Holographic dark energy; Phantom-like; Coupling parameter; Cosmological model
چکیده	We study a cosmological implication of holographic dark energy in the Brans-Dicke gravity. We employ the holographic model of dark energy to obtain the equation of state for the holographic energy density in non-flat (closed) universe enclosed by the event horizon measured from the sphere of horizon named $L$. Our analysis shows that one can obtain the phantom crossing scenario if the model parameter $\alpha$ (of order unity) is tuned accordingly. Moreover, this behavior is achieved by treating the Brans-Dicke scalar field as a Chameleon scalar field and taking a non-minimal coupling of the scalar field with matter. Hence one can generate phantom-like equation of state from a holographic dark energy model in non-flat universe in the Brans-Dicke cosmology framework.
پژوهشگران	محمد رضا ستاره (نفر اول)، مباشر جمیل (نفر دوم)