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arXiv 1301.4286gr-qc
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类空和零无限附近平坦空间中的二阶自旋2系统

The second order spin-2 system in flat space near space-like and null-infinity

Georgios Doulis, Joerg Frauendiener

摘要:

在以往的工作中,我们讨论了类空和零无穷远附近的线性化引力场方程在共形Weyl曲率扰动下的自旋为2的零静止质量方程的数值解.其动机是研究行为的领域和属性的数值演变的系统在无穷远使用弗里德里希的共形表示的空间一样无限的圆柱。H.O.指出,Kreiss等人认为,与一阶方程组相比,使用二阶波动方程的系统的数值演化具有若干优点。因此,本文导出了一个二阶波动方程组,并证明了在适当的初值和边界条件下,这两个方程组的解空间是相同的。我们研究了这一系统的耦合波方程在相同的几何设置的性质,并讨论了两种方法之间的差异。

英文摘要:

In previous work, the numerical solution of the linearized gravitational field equations near space-like and null-infinity was discussed in the form of the spin-2 zero-rest-mass equation for the perturbations of the conformal Weyl curvature. The motivation was to study the behavior of the field and properties of the numerical evolution of the system near infinity using Friedrich's conformal representation of space-like infinity as a cylinder. It has been pointed out by H.O. Kreiss and others that the numerical evolution of a system using second order wave equations has several advantages compared to a system of first order equations. Therefore, in the present paper we derive a system of second order wave equations and prove that the solution spaces of the two systems are the same if appropriate initial and boundary data are given. We study the properties of this system of coupled wave equations in the same geometric setting and discuss the differences between the two approaches.

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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