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arXiv 2304.05751hep-thgr-qc
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RN-AdS 黑洞的广义体积复杂度

Generalized Volume-Complexity for RN-AdS Black Hole

Meng-Ting Wang, Hong-Yue Jiang, Yu-Xiao Liu

AI总结:

本文研究四维 RN-AdS 黑洞的广义体积复杂度,发现同一边界时刻存在多个极值超曲面,最大超曲面会随时间发生跳变,该不连续跳变类似相变,对偶于热场双态复杂度的变化。

摘要:

量子信息与量子引力之间的联系一直吸引着物理学家的想象。最近,一类广泛的新型引力可观测量被提出,为全息复杂度提供了新的可能性,这是 Complexity=Volume 方案中体积的一种推广。本文研究了四维 Reissner-Nordström-AdS 黑洞的广义体积复杂度。这些新的可观测量满足热场双态的特征,即在后期阶段随时间线性增长。我们发现,在某一特定边界时刻锚定的极值超曲面存在多个。换句话说,对于同一边界时刻,体内部可以存在不止一个可观测量(广义体积复杂度)。两个超曲面上可观测量的相对大小关系随时间发生变化。这将导致最大极值超曲面的替换,该最大极值超曲面对偶于热场双态的复杂度。我们将一个超曲面取代另一个超曲面成为最大极值超曲面的时刻称为转折时间 $τ_{turning}$。也就是说,对偶于边界上定义的热场双态复杂度的超曲面从一个分支跳变到另一个分支。这种不连续跳变非常类似于相变,转折时间表示这一相变发生的时刻。我们的发现提出了体物理中的一种不连续变化,该变化对偶于边界上定义的热场双态的复杂度。

英文摘要:

The connection between quantum information and quantum gravity has captured the imagination of physicists. Recently, a broad new class of gravitational observables have been proposed to provide new possibilities for holographic complexity \cite{Belin:2021bga} , which is an extension of volume in the Complexity=Volume proposal. In this paper, we investigate generalized volume-complexity for the 4-dimensional Reissner-Nordström-AdS black hole. These new observables satisfy the characteristic of the thermofield double state, i.e., they grow linearly in time on the late stage. We find that there are multiple extremal hypersurfaces anchored at a certain boundary time. In other words, for the same boundary time, more than one observable (generalized volume-complexity) can exist in the bulk. The size relationship of the observables on the two hypersurfaces changes over time. This will result in the substitution of the maximum extreme hypersurface which is dual to the complexity of the thermofield double state. We call the time when one hypersurface replaces another to become the largest extreme hypersurface the turning time $τ_{turning}$. That is, a hypersurface dual to the complexity of the thermofield double state defined on the boundary jumps from one branch to another. This discontinuous jump is highly reminiscent of a phase transition, and the turning time denotes the moment at which this phase transition occurs. Our findings propose a discontinuous variation in bulk physics that is dual to the complexity of the thermofield double state defined on the boundary.

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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