1403/08/19
راضیه زارع گنبدی

راضیه زارع گنبدی

مرتبه علمی: استادیار
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده علوم پایه
نشانی:
تلفن:

مشخصات پژوهش

عنوان
Cosmic acceleration via space-time-matter theory
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Space-time-matter theory cosmic acceleration phase geodesic deviation equation
سال
2019
مجله MODERN PHYSICS LETTERS A
شناسه DOI
پژوهشگران Raziyeh Zaregonbadi

چکیده

We consider the space-time-matter theory (STM) in a 5D vacuum spacetime with a generalized FLRW metric to investigate the late-time acceleration of the universe. For this purpose, we derive the 4D induced field equations and obtain the evolution of the state parameter with respect to the redshift. Then, we show that with consideration of the extra dimension scale factor to be a linear function of redshift, this leads to a model which gives an accelerating phase in the universe. Moreover, we derive the geodesic deviation equation in the STM theory to study the relative acceleration of the parallel geodesics of this spacetime, and also, obtain the observer area-distance as a measurable quantity to compare this theory with two other models.