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arXiv 1407.0660math.DGgr-qc
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渐近双曲流形中Brown-York拟局部质量的极限行为

On the limiting behavior of the Brown-York quasi-local mass in asymptotically hyperbolic manifolds

Ezequiel Barbosa, Levi Lopes de Lima, Frederico Girão

摘要:

证明了在数量曲率上满足相关能量条件的渐近双曲$3$ -流形的任意坐标穷竭上的向量值Brown-York型拟局部质量在无穷远处的极限具有严格因果特征.我们的证明使用旋量,并依赖于威滕型公式表示的渐近极限,这种准本地质量作为一个整体积分,显然有正确的标志下,上述假设。在最近的工作的精神Hijazi,Montiel和Raulot,我们还提供了另一个证明这一结果使用的理论的边值问题狄拉克算子在紧域上,以表明,一定的准局部质量,收敛到布朗约克质量的渐近极限,具有预期的因果性质在适当的几何假设。

英文摘要:

We show that the limit at infinity of the vector-valued Brown-York-type quasi-local mass along any coordinate exhaustion of an asymptotically hyperbolic $3$-manifold satisfying the relevant energy condition on the scalar curvature has the conjectured causal character. Our proof uses spinors and relies on a Witten-type formula expressing the asymptotic limit of this quasi-local mass as a bulk integral which manifestly has the right sign under the above assumptions. In the spirit of recent work by Hijazi, Montiel and Raulot, we also provide another proof of this result which uses the theory of boundary value problems for Dirac operators on compact domains to show that a certain quasi-local mass, which converges to the Brown-York mass in the asymptotic limit, has the expected causal character under suitable geometric assumptions.

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