arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1507.04161gr-qc
收藏

一类新的渐近非混沌真空奇点

A New Class of Asymptotically Non-Chaotic Vacuum Singularities

Paul Klinger

摘要:

在60年代和70年代初由贝林斯基、哈拉特尼科夫和利夫希茨提出的BKL猜想,提出了一个关于时空在接近类空奇点时的一般渐近动力学的详细描述。它预测复杂的混沌行为的一般情况下,但简单的非混沌的情况下,对称性假设或某些种类的物质领域。在这里,我们构建了一类新的四维真空时空含有类空奇点,显示非混沌行为。与以前的结构相比,没有对称性的假设。相反,度量被分解在岩泽变量和条件的渐近演化的一些人施加。所构造的解包含所有空间坐标的五个自由函数,其中两个由不等式约束。我们调查连续和离散等距和比较以前的建设的解决方案。最后,我们给出了度量分量和曲率的渐近性质。

英文摘要:

The BKL conjecture, stated in the 60s and early 70s by Belinski, Khalatnikov and Lifshitz, proposes a detailed description of the generic asymptotic dynamics of spacetimes as they approach a spacelike singularity. It predicts complicated chaotic behaviour in the generic case, but simpler non-chaotic one in cases with symmetry assumptions or certain kinds of matter fields. Here we construct a new class of four-dimensional vacuum spacetimes containing spacelike singularities which show non-chaotic behaviour. In contrast with previous constructions, no symmetry assumptions are made. Rather, the metric is decomposed in Iwasawa variables and conditions on the asymptotic evolution of some of them are imposed. The constructed solutions contain five free functions of all space coordinates, two of which are constrained by inequalities. We investigate continuous and discrete isometries and compare the solutions to previous constructions. Finally, we give the asymptotic behaviour of the metric components and curvature.

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。

↑