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arXiv 1801.08359gr-qc
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具有正宇宙学常数的旋转Bowen-York初值

Rotating Bowen-York initial data with a positive cosmological constant

Patryk Mach, Jerzy Knopik

摘要:

本文研究了将Bowen-York初值推广到正宇宙学常数的情形。我们遵循Bizoenz,Pletka和Simon最近提出的构造,数值求解紧致域$\mathbb S^1 \times \mathbb S^2$上的Lichnerowicz方程.除了两个分支的解决方案取决于极性变量的$\mathbb S^2$是已知的,我们发现分支的解决方案取决于两个变量:极性变量的$\mathbb S^2$和$\mathbb S^1$上的坐标。利用Vanderbauwhede关于对称解分支的结果,我们证明了相应分支点的存在性。通过线性化Lichnerowicz方程和解决由此产生的特征值问题,我们收集的数值证据表明,没有额外的分支的解决方案。

英文摘要:

A generalization of the Bowen-York initial data to the case with a positive cosmological constant is investigated. We follow the construction presented recently by Bizoń, Pletka and Simon, and solve numerically the Lichnerowicz equation on a compactified domain $\mathbb S^1 \times \mathbb S^2$. In addition to two branches of solutions depending on the polar variable on $\mathbb S^2$ that were already known, we find branches of solutions depending on two variables: the polar variable on $\mathbb S^2$ and the coordinate on $\mathbb S^1$. Using Vanderbauwhede's results concerning bifurcations from symmetric solutions, we show the existence of the corresponding bifurcation points. By linearizing the Lichnerowicz equation and solving the resulting eigenvalue problem, we collect numerical evidence suggesting the absence of additional branches of solutions.

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。

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