广义相对论中的2+1维平面方程与盘状星云的演化
Universal 2+1-Dimensional Plane Equations in General Relativity and Evolutions of Disk Nebula
摘要：
广义相对论是任何大尺度结构精确演化理论的基础。计算了广义相对论中普遍的2+1维平面引力场方程。在此基础上讨论了盘状星云的演化。一个星云系统在不同的条件下可以形成双星或单星。而任何简化的线性理论都只形成一个单星系统。证明了非线性相互作用是非常普遍的，因此双星也是常见的。
英文摘要：
The general relativity is the base for any exact evolutionary theory of large scale structures. We calculate the universal 2+1-dimensional plane equations of gravitational field in general relativity. Based on the equations, the evolutions of disk nebula are discussed. A system of nebula can form binary stars or single star for different conditions. While any simplified linear theory forms only a single star system. It is proved that the nonlinear interactions are very general, so the binary stars are also common.
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