کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10723484 1033861 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Is the future universe singular: Dark matter versus modified gravity?
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله
Is the future universe singular: Dark matter versus modified gravity?
چکیده انگلیسی
The fundamental problem of the occurrence/removal of finite-time future singularity in the universe evolution for coupled Dark Energy (DE) is addressed. It is demonstrated the existence of the (instable or local minimum) de Sitter space solution which may cure the Type II or Type IV future singularity for DE coupled with DM as the result of tuning the initial conditions. In case of phantom DE, the corresponding coupling may help to resolve the coincidence problem but not the Big Rip (Type I) singularity issue. We show that modified gravity of special form or inhomogeneous DE fluid may offer the universal scenario to cure the Type I, II, III or IV future singularity of coupled (fluid or scalar) DE evolution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 686, Issue 1, 15 March 2010, Pages 44-48
نویسندگان
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