مشخصات پژوهش

صفحه نخست /Cosmological Implications of ...
عنوان Cosmological Implications of the Generalized Entropy Based Holographic Dark Energy Models in Dynamical Chern-Simons Modified Gravity
نوع پژوهش مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها Modified gravity; dark energy; vacuum energy
چکیده Recently, Tsallis, R´enyi, and Sharma-Mittal entropies have widely been used to study the gravitational and cosmological setups.We consider a flat FRWuniversewith linear interactionbetween dark energy and darkmatter.We discuss the dark energymodels using Tsallis, R´enyi, and Sharma-Mittal entropies in the framework of Chern-Simons modified gravity.We explore various cosmological parameters (equation of state parameter, squared sound of speed ) and cosmological plane (𝜔𝑑 − 𝜔󸀠 𝑑, where 𝜔󸀠 𝑑 is the evolutionary equation of state parameter). It is observed that the equation of state parameter gives quintessence-like nature of the universe in most of the cases. Also, the squared speed of sound shows stability of Tsallis and R´enyi dark energy model but unstable behavior for Sharma-Mittal dark energy model. The 𝜔𝑑 − 𝜔󸀠 𝑑 plane represents the thawing region for all dark energy models.
پژوهشگران محمد یونس (نفر اول)، عبدل جواد (نفر دوم)، صبا قمر (نفر سوم)، هومان مرادپور (نفر چهارم)، شامایلا رانی (نفر پنجم)