Bulk Viscous FRW Cosmology in Lyra Geometry
作者： A. PRADHAN , V. K. YADAV , INDRAJIT CHAKRABARTY
DOI: 10.1142/S0218271801000767
关键词: Classical mechanics 、 Viscous liquid 、 Deceleration parameter 、 Friedmann–Lemaître–Robertson–Walker metric 、 Cosmology 、 Geometry 、 Volume viscosity 、 Universe 、 Physics 、 Displacement field 、 Isotropy
摘要: We have studied an isotropic homogeneous FRW universe in the presence of a bulk viscous fluid within framework Lyra's geometry. obtained exact solutions Sen equations assuming deceleration parameter to be constant. The coefficient viscosity has been assumed power function mass density. With this assumption, we considered behavior displacement field and energy density for both power-law exponential expansions universe. show that our models are generalised obtain results previous works by considering k=0 k=-1.
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