کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1866825 1530575 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Barotropic FRW cosmologies with Chiellini damping
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Barotropic FRW cosmologies with Chiellini damping
چکیده انگلیسی
It is known that barotropic FRW equations written in the conformal time variable can be reduced to simple linear equations for an exponential function involving the conformal Hubble rate. Here, we show that an interesting class of barotropic universes can be obtained in the linear limit of a special type of nonlinear dissipative Ermakov-Pinney equations with the nonlinear dissipation built from Chiellini's integrability condition. These cosmologies, which evolutionary are similar to the standard ones, correspond to barotropic fluids with adiabatic indices rescaled by a particular factor and have amplitudes of the scale factors inverse proportional to the adiabatic index.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 379, Issues 10–11, 8 May 2015, Pages 882-887
نویسندگان
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