arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0903.3519math.DGgr-qc
收藏

通过芬斯勒度规测地线的莫尔斯理论得到的定常时空中因果测地线的莫尔斯理论

Morse theory of causal geodesics in a stationary spacetime via Morse theory of geodesics of a Finsler metric

Erasmo Caponio, Miguel Angel Javaloyes, Antonio Masiello

摘要:

我们证明了共形标准定态时空中的类光测地线的指数等于其作为与该时空相关联的芬斯勒度量的测地线的空间投影的指数。利用相应的Finsler流形上的莫尔斯理论,得到了标准类时Killing向量场的积分线与点之间的类光测地线的莫尔斯关系.为此,我们证明了Finsler度量的能量泛函的分裂引理。最后,我们表明,减少到莫尔斯理论的芬斯勒流形也可以做类时测地线。

英文摘要:

We show that the index of a lightlike geodesic in a conformally standard stationary spacetime is equal to the index of its spatial projection as a geodesic of a Finsler metric associated to the spacetime. Moreover we obtain the Morse relations of lightlike geodesics connecting a point to an integral line of the standard timelike Killing vector field by using Morse theory on the associated Finsler manifold. To this end, we prove a splitting lemma for the energy functional of a Finsler metric. Finally, we show that the reduction to Morse theory of a Finsler manifold can be done also for timelike geodesics.

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。

↑