17 بهمن 1401

اکرم السادات سفیدگر

مرتبه علمی: استادیار
نشانی:
تحصیلات: دکترای تخصصی / فیزیک-گرانش و کیهان شناسی
تلفن: 01135302435
دانشکده: دانشکده علوم پایه

مشخصات پژوهش

عنوان How Can the Modified Dispersion Relation Affect Friedmann Equations?
نوع پژوهش مقاله چاپ شده
کلیدواژه‌ها
Friedmann equation, MDR
مجله Advances in High Energy Physics
شناسه DOI 10.1155/2014/727245
پژوهشگران اکرم السادات سفیدگر (نفر اول)

چکیده

The appearance of the quantum gravitational effects in a very high energy regime necessitates some corrections to the thermodynamics of Friedmann-Robertson-Walker (FRW) universe. The modified dispersion relation (MDR) as a phenomenological approach to investigate the high energy physics provides a perturbation framework uponwhich the FRWuniverse thermodynamics can be corrected. In this letter, we obtain the corrected entropy-area relation of the apparent horizon of FRWuniverse by utilizing the extra dimensional formofMDR, leading to the modification of Friedmann equations. The influence ofMDR on the Friedmann equations provides a good insight into the understanding of the FRWuniverse dynamics in the final quantum gravity theory.