论文标题
FLRW宇宙的叠加
Superposition of FLRW Universes
论文作者
论文摘要
我们表明，（1）具有完美流体源的爱因斯坦田间方程承认，两个不同的同质弗里德曼 - 弗里德曼·罗伯特森 - 罗伯逊 - 沃克（FLRW）作为溶液的非线性叠加，（2）超级溶液是一种不合理的几何形状，（3）是在后来的一般（3），这是一个同型的，这是一个均值的溶液。如两个不同的FLRW指标所描述的那样，（4）溶液具有一个比例因子反转对称性，（5）解决方案暗示了两种拓扑变化：一个在超级宇宙的时间演化中，另一个在空间的渐进区域中发生。
We show that (1) the Einstein field equations with a perfect fluid source admit a nonlinear superposition of two distinct homogenous Friedman-Lemaitre-Robertson-Walker (FLRW) metrics as a solution, (2) the superposed solution is an inhomogeneous geometry in general, (3) it reduces to a homogeneous one in the two asymptotes which are the early and the late stages of the universe as described by two different FLRW metrics, (4) the solution possesses a scale factor inversion symmetry and (5) the solution implies two kinds of topology changes: one during the time evolution of the superposed universe and the other occurring in the asymptotic region of space.
