arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1002.1172gr-qc
收藏

平稳解与渐近平坦性I

Stationary solutions and asymptotic flatness I

Martin Reiris

摘要:

本文及其续篇讨论了广义相对论中代表孤立体的时空的渐近结构。这样的时空通常要求是渐近平坦的(AF),因此具有规定的渐近类型。尽管这个要求是“合理的”,但它似乎违背了广义相对论的精神,即时空的整体结构也应该被视为一个变量。这里表明,即使从定义中消除任何先验参考或关于渐近的假设,孤立体的时空是可证明的和后验的AF。在这两篇文章之间,证明了任何真空严格静止时空的结束,(商)流形同构于R^3减去一个球,并且其Killing场的范数有界远离零,则它必然是AF,且具有Schwarzschidian fall off。“切除”的球将包含(如果有的话)实际的物质体,但这一信息或任何其他信息对于得出结论是不必要的。物理和数学的影响也进行了讨论。

英文摘要:

In this article and its sequel we discuss the asymptotic structure of space-times representing isolated bodies in General Relativity. Such space-times are usually required to be asymptotically flat (AF), and thus to have a prescribed type of asymptotic. Despite all the "reasonable" that the requirement is, it seems to be against the spirit of General Relativity where the global structure of the space-time should be also considered as a variable. It is shown here that, even eliminating from the definition any a priori reference or assumption about the asymptotic, the space-times of isolated bodies are unavoidably and a posteriori AF. In precise terms, between the two articles it is proved that any vacuum strictly stationary space-time end whose (quotient) manifold is diffeomorphic to R^3 minus a ball and whose Killing field has its norm bounded away from zero is necessarily AF with Schwarzschidian fall off. The "excised" ball would contain (if any) the actual material body, but this information or any other is not necessary to reach the conclusion. Physical and mathematical implications are also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑