Early Cosmological Models with Bulk Viscosity in Brans-Dicke Theory

被引：0
作者：
Shri Ram
C.P. Singh
机构：
[1] Hindu University,Department of Applied Mathematics, Institute of Technology, Banaras
来源：
Astrophysics and Space Science | 1997年 / 254卷
关键词：
Cosmological Model; Bulk Viscosity; Particle Creation; Zero Curvature; Universe Expand;
D O I：
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学科分类号：
摘要：
The effect of time dependent bulk viscosity on the evolution of Friedmann models with zero curvature in Brans-Dicke theory is studied. The solutions of the field equations with ‘gamma-law’ equation of state p = (γ-1) ρ, where γ varies continuously as the Universe expands, are obtained by using the power-law relation φ = bRn, which lead to models with constant deceleration parameter. We obtain solutions for the inflationary period and radiation dominated era of the universe. The physical properties of cosmological solutions are also discussed.
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页码：143 / 150
页数：7
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