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 2202.13035hep-th
收藏

大地膜重力的Jacobi方程

Jacobi equations of geodetic brane gravity

Riccardo Capovilla, Giovany Cruz, Efraín Rojas

摘要:

我们考虑膜引力描述的Regge-Teitelboim几何模型,在任何余维。在膜引力中,我们的时空被建模为类空膜在其演化过程中所跨越的类时世界体积,被视为嵌入在更高维的闵可夫斯基时空背景中的流形。虽然该模型的运动方程是众所周知的,但显然它们的线性化以前没有被考虑过。使用直接的方法,我们线性化的运动方程的解决方案,获得的Regge-Teitelboim模型的雅可比方程。他们有一个可怕的方面。对它们的一些特点进行了评述。通过识别Jacobi方程,我们得到了一个明确的表达式的莫尔斯指数的模型。具体地说,我们应用Jacobi方程研究了嵌入在6维Minkowski时空中的四维Schwarzschild时空的稳定性。我们发现它在小的线性变形下是不稳定的。

英文摘要:

We consider brane gravity as described by the Regge-Teitelboim geometric model, in any codimension. In brane gravity our spacetime is modeled as the time-like world volume spanned by a space-like brane in its evolution, seen as a manifold embedded in an ambient background Minkowski spacetime of higher dimension. Although the equations of motion of the model are well known, apparently their linearization has not been considered before. Using a direct approach, we linearize the equations of motion about a solution, obtaining the Jacobi equations of the Regge- Teitelboim model. They take a formidable aspect. Some of their features are commented upon. By identifying the Jacobi equations, we derive an explicit expression for the Morse index of the model. To be concrete, we apply the Jacobi equations to the study of the stability of a four-dimensional Schwarzschild spacetime embedded in a six-dimensional Minkowski spacetime. We find that it is unstable under small linear deformations.

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。

↑