1403/01/28
کوروش نوذری

کوروش نوذری

مرتبه علمی: استاد
ارکید: https://orcid.org/0000-0003-4368-5823
تحصیلات: دکترای تخصصی
اسکاپوس: 9276301800
دانشکده: دانشکده علوم پایه
نشانی: بابلسر- دانشگاه مازندران- دانشکده علوم پایه- گروه فیزیک نظری
تلفن: 01135302482

مشخصات پژوهش

عنوان
Emergent universe in theories with natural UV cutoffs
نوع پژوهش
JournalPaper
کلیدواژه‌ها
modified theories of gravity, cosmology, particle-theory and field-theory models of the early Universe
سال
2018
مجله CLASSICAL AND QUANTUM GRAVITY
شناسه DOI
پژوهشگران Mohsen Khodadi ، Kourosh Nozari ، Emmanuel Saridakis

چکیده

We investigate the realization of the emergent universe scenario in theories with natural UV cutoffs, namely a minimum length and a maximum momentum, quantified by a new deformation parameter in the generalized uncertainty principle. We extract the Einstein static universe solutions and we examine their stability through a phase-space analysis. As we show, the role of the new deformation parameter is crucial in a twofold way: firstly, it leads to the appearance of new Einstein static universe critical points, that are absent in standard cosmology. Secondly, it provides a way for a graceful exit from the Einstein static universe into the expanding thermal history, that is needed for a complete and successful realization of the emergent universe scenario.