30 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
Generalized entropy formalism and a new holographic dark energy model
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Generalized statistical mechanics, vacuum energy, dark energy
سال
2018
مجله PHYSICS LETTERS B
شناسه DOI https://doi.org/10.1016/j.physletb.2018.02.052
پژوهشگران علی صیاحیان جهرمی ، سید امین موسوی ، هومان مرادپور ، ج پی گراسا ، یاریی پی لوبو ، اینس گودونو سالاکو ، عبدل جواد

چکیده

Recently, the Rényi and Tsallis generalized entropies have extensively been used in order to study various cosmological and gravitational setups. Here, using a special type of generalized entropy, a generalization of both the Rényi and Tsallis entropy, together with holographic principle, we build a new model for holographic dark energy. Thereinafter, considering a flat FRW universe, filled by a pressureless component and the new obtained dark energy model, the evolution of cosmos has been investigated showing satisfactory results and behavior. In our model, the Hubble horizon plays the role of IR cutoff, and there is no mutual interaction between the cosmos components. Our results indicate that the generalized entropy formalism may open a new window to become more familiar with the nature of spacetime and its properties.