期刊
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
卷 123, 期 4, 页码 617-622出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1063776116110157
关键词
-
We discuss a spatially homogeneous and anisotropic string cosmological models in the Brans-Dicke theory of gravitation. For a spatially homogeneous metric, it is assumed that the expansion scalar theta is proportional to the shear scalar sigma. This condition leads to A = kB (m) , where k and m are constants. With these assumptions and also assuming a variable scale factor a = a(t), we find solutions of the Brans-Dicke field equations. Various phenomena like the Big Bang, expanding universe, and shift from anisotropy to isotropy are observed in the model. It can also be seen that in early stage of the evolution of the universe, strings dominate over particles, whereas the universe is dominated by massive strings at the late time. Some physical and geometrical behaviors of the models are also discussed and observed to be in good agreement with the recent observations of SNe la supernovae.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据