کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8201898 1529848 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Viable mimetic F(R) gravity compatible with Planck observations
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Viable mimetic F(R) gravity compatible with Planck observations
چکیده انگلیسی
Using the mimetic matter approach, we study F(R) gravity with scalar potential and Lagrange multiplier constraint. As we demonstrate, for a given F(R) gravity and for suitably chosen mimetic potential, it is possible to realize inflationary cosmology consistent with Planck observations. We also investigate the de Sitter solutions of the mimetic F(R) theory and study the stability of the solutions, when these exist, towards linear perturbations, with the unstable solutions, which can provide a mechanism for graceful exit from inflation. Finally, we describe a reconstruction method which can yield the F(R) gravity that can generate realistic inflationary cosmological evolution, given the mimetic potential and the Hubble rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Annals of Physics - Volume 363, December 2015, Pages 503-514
نویسندگان
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