搜索结果: 1-5 共查到“星系与宇宙学 solutions”相关记录5条 . 查询时间(0.203 秒)
Enlargement of the Transformation Group of General Relativity: Spherically Symmetric Solutions
Gravity theory, transformation groups Lagrangians fi eld equations stellar model external spherically symmetric solutions
2011/10/18
A theory has been presented previously in which the geometrical structure of a real four-dimensional space time manifold is expressed by a real orthonormal tetrad, and the group of diffeomorphisms is ...
Mhd Solutions For Proto-Planetary Nebulae。
Exact Solutions of Brans-Dicke Cosmology and the Cosmic Coincidence Problem
Brans-Dicke Cosmology the Cosmic Coincidence Problem
2010/10/15
We present some cosmological solutions of Brans-Dicke theory, characterized by a decaying vacuum energy density and by a constant relative matter density. With these features, they shed light on the c...
Phase Space Solutions in Scalar-Tensor Cosmological Models
Phase Space Solutions Scalar-Tensor Cosmological Models
2010/10/15
An analysis of the solutions for the field equations of generalized scalar-tensor theories of gravitation is performed through the study of the geometry of the phase space and the stability of the sol...
Remarks on Some Vacuum Solutions of Scalar-Tensor Cosmological Models
Vacuum Solutions Scalar-Tensor Cosmological Models
2010/10/21
We present a class of exact vacuum solutions corresponding to de Sitter and warm inflation models in the framework of scalar-tensor cosmologies. We show that in both cases the field equations reduce t...