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arXiv 0804.2679gr-qc
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爱因斯坦方程的轴对称演化与质量守恒

Axisymmetric evolution of Einstein equations and mass conservation

Sergio Dain

摘要:

对于孤立系的轴对称演化,我们证明了存在一个规范,使得总质量在叶理的类空超曲面上可写成正定积分,且积分沿演化方向为常数.守恒质量积分控制外在曲率的平方和内在度量的一阶导数的平方。我们还讨论了这一结果在轴对称的整体存在性问题中的应用。

英文摘要:

For axisymmetric evolution of isolated systems, we prove that there exists a gauge such that the total mass can be written as a positive definite integral on the spacelike hypersurfaces of the foliation and the integral is constant along the evolution. The conserved mass integral controls the square of the extrinsic curvature and the square of first derivatives of the intrinsic metric. We also discuss applications of this result for the global existence problem in axial symmetry.

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