论文标题
Mimetic Kantowski-Sachs宇宙学中的奇异性
The singularity in mimetic Kantowski-Sachs cosmology
论文作者
论文摘要
在所谓的限制曲率模拟重力理论中研究了真空kantowski-sachs时空的动力学。结果表明，在这个理论中，真空kantowski-sachs时空总是很单数。虽然由于限制曲率模拟理论而偏离了一般相对论，但确实为扩展标量的幅度提供了上限，但其振荡速率和方向哈勃速率的幅度都增加而没有结合，并且导致曲率不变性差异。同样，由于径向尺度因子在有限的（过去）中不会消失，因此在这个特殊的理论中，kantowski-sachs时空无法与无效的黑洞事件范围相匹配，因此，kantowski-sachs时空不能与静态和球形对称的黑洞的内部相对应。
The dynamics of the vacuum Kantowski-Sachs space-time are studied in the so-called limiting curvature mimetic gravity theory. It is shown that in this theory the vacuum Kantowski-Sachs space-time is always singular. While the departures from general relativity due to the limiting curvature mimetic theory do provide an upper bound on the magnitude of the expansion scalar, both its rate of oscillations and the magnitude of the directional Hubble rates increase without bound and cause curvature invariants to diverge. Also, since the radial scale factor does not vanish in finite (past) time, in this particular theory the Kantowski-Sachs space-time cannot be matched to a null black hole event horizon and, therefore, does not correspond to the interior of a static and spherically symmetric black hole.
