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Higher order perturbations of anti–de Sitter space and time-periodic solutions of vacuum Einstein equations

机译:真空Einstein方程的反De Sitter空间的高阶扰动和时间周期解

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Motivated by the problem of stability of anti–de Sitter (AdS) spacetime, we discuss nonlinear gravitational perturbations of maximally symmetric solutions of vacuum Einstein equations in general and the case of AdS in particular. We present the evidence that, similarly to the self-gravitating scalar field at spherical symmetry, the negative cosmological constant allows for the existence of globally regular asymptotically AdS, time-periodic solutions of vacuum Einstein equations whose frequencies bifurcate from linear eigenfrequencies of AdS. Interestingly, our preliminary results indicate that the number of one-parameter families of time-periodic solutions bifurcating from a given eigenfrequency equals the multiplicity of this eigenfrequency.
机译:受Anti-de Sitter(AdS)时空稳定性问题的影响,我们讨论了真空爱因斯坦方程的最大对称解的非线性重力摄动,尤其是AdS情形。我们提供的证据表明,类似于球对称的自引力标量场,负宇宙学常数允许存在整体规则渐近AdS,真空爱因斯坦方程的时间周期解,其频率与AdS的线性本征频率分叉。有趣的是,我们的初步结果表明,从给定的本征频率分叉的一周期时间参数解的参数族等于该本征频率的倍数。

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