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arXiv 2109.02131gr-qcmath.APmath.DG
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Kerr黑洞的轴对称扰动 II:轨道空间中动力学的边界行为

Axially Symmetric Perturbations of Kerr Black Holes II: Boundary Behaviour of the Dynamics in the Orbit Space

Nishanth Gudapati

AI总结:

本文通过证明Kerr黑洞轴对称线性扰动理论中的正定能量在时间上严格守恒,揭示了该黑洞的一种动态线性稳定性。

摘要:

在 previous work, we constructed a positive-definite total energy functional for the axially symmetric linear perturbative theory of Kerr black hole spacetimes. That work is based on the dimensional reduction of dynamical axisymmetric spacetimes into 2+1 Einstein-wave map system. In the construction of the positive-def energy, various dynamical terms, the boundary of the orbit space, critically occur. In this work, after setting up the initial value problem in harmonic coordinates, we prove that the the positive energy for the axially symmetric linear perturbative theory of Kerr black holes is strictly conserved in time, by establishing that all boundary terms dynamically vanish for all times. This result implies a form of dynamical linear stability of Kerr black holes.

英文摘要:

In a previous work, we constructed a positive-definite total energy functional for the axially symmetric linear perturbative theory of Kerr black hole spacetimes. That work is based on the dimensional reduction of dynamical axisymmetric spacetimes into 2+1 Einstein-wave map system. In the construction of the positive-definite energy, various dynamical terms, at the boundary of the orbit space, critically occur. In this work, after setting up the initial value problem in harmonic coordinates, we prove that the positive energy for the axially symmetric linear perturbative theory of Kerr black holes is strictly conserved in time, by establishing that all the boundary terms dynamically vanish for all times. This result implies a form of dynamical linear stability of Kerr black holes

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