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arXiv 2111.04489gr-qcmath.AP
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Kerr时空中Teukolsky方程的锐衰减

Sharp decay for Teukolsky equation in Kerr spacetimes

Siyuan Ma, Lin Zhang

AI总结:

本文在慢速旋转及任意次极端Kerr时空中,利用新的全局守恒律推导了Teukolsky方程自旋分量在黑洞外部和事件视界上的全局锐衰减上下界,证实了Price定律的锐性。

摘要:

在这项工作中,我们对自旋 $\pm \mathfrak{s}$ 分量——它们是Teukolsky方程的解——在慢速旋转Kerr时空的黑洞外部和事件视界上,推导了全局锐衰减,同时给出下界和上界。这些估计在积分局部能量衰减估计下被推广到任意次极端Kerr背景。我们的结果适用于标量场 $(\mathfrak{s}=0)$、Maxwell场 $(\mathfrak{s}=1)$ 和线性化引力 $(\mathfrak{s}=2)$,并证实了被推测为锐的Price定律衰减。我们的分析依赖于Teukolsky方程的一个新的全局守恒律,这种新方法可以应用于推导半线性波动方程解的精确渐近行为。

英文摘要:

In this work, we derive the global sharp decay, as both a lower and an upper bounds, for the spin $\pm \mathfrak{s}$ components, which are solutions to the Teukolsky equation, in the black hole exterior and on the event horizon of a slowly rotating Kerr spacetime. These estimates are generalized to any subextreme Kerr background under an integrated local energy decay estimate. Our results apply to the scalar field $(\mathfrak{s}=0)$, the Maxwell field $(\mathfrak{s}=1)$ and the linearized gravity $(\mathfrak{s}=2)$ and confirm the Price's law decay that is conjectured to be sharp. Our analyses rely on a novel global conservation law for the Teukolsky equation, and this new approach can be applied to derive the precise asymptotics for solutions to semilinear wave equations.

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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