29 اردیبهشت 1403

هومان مرادپور

مرتبه علمی: دانشیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک - گرانش، اخترفیزیک و کیهان شناسی
تلفن: -
دانشکده: مرکز تحقیقات نجوم و اختر فیزیک مراغه

مشخصات پژوهش

عنوان
Tsallis holographic dark energy in the Brans–Dicke cosmology
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Holographic Dark energy, Non extensive Entropy, Modified Gravity
سال
2018
مجله EUROPEAN PHYSICAL JOURNAL C
شناسه DOI 10.1140/epjc/s10052-018-6198-x
پژوهشگران شایسته غفاری شویشه ، هومان مرادپور ، یاریی پی لوبو ، ج پی گراسا ، والدیر بی بزرا

چکیده

Using the Tsallis generalized entropy, holographic hypothesis and also considering the Hubble horizon as the IRcutoff, we build a holographic model for dark energy and study its cosmological consequences in the Brans–Dicke framework. At first, we focus on a non-interacting universe, and thereinafter, we study the results of considering a signchangeable interaction between the dark sectors of the cosmos. Our investigations show that, compared with the flat case, the power and freedom of the model in describing the cosmic evolution is significantly increased in the presence of the curvature. The stability analysis also indicates that, independent of the universe curvature, both the interacting and non-interacting cases are classically unstable. In fact, both the classical stability criterion and an acceptable behavior for the cosmos quantities, including the deceleration and density parameters as well as the equation of state, are not simultaneously obtainable