论文标题
可穿越的虫洞中的复兴动态
Revival dynamics in a traversable wormhole
论文作者
论文摘要
量子效应可以在一般相对论中稳定虫洞溶液，从而使信息和物质可以在两个相连的空间之间传输。在这里，我们研究了两个弱耦合的量子混沌系统之间发送的信号的复兴动力学，这些系统表示为相同的Sachdev-ye-Kitaev模型，这些模型在反DE保姆Spacetime Ads $ _2 $ _2 $ _2 $ _2 $ n $ n $ n $ n $ n $ n $ n $ n $ n $ n $。在此限制中，我们发现了虫洞行为的明确签名：在一个系统中产生的激发很快就会在其统一动力下加重，并且在与全息图预测一致的特征时间后，在另一个系统中重新组装。这导致了复兴振荡，这些振荡在低但有限的温度衰减时作为幂律。对于小$ n $，我们还观察到复兴，并表明它们源于不同的非重力机制。
Quantum effects can stabilize wormhole solutions in general relativity, allowing information and matter to be transported between two connected spacetimes. Here we study the revival dynamics of signals sent between two weakly coupled quantum chaotic systems, represented as identical Sachdev-Ye-Kitaev models, that realize holographically a traversable wormhole in anti-de Sitter spacetime AdS$_2$ for large number $N$ of particles. In this limit we find clear signatures of wormhole behavior: an excitation created in one system is quickly scrambled under its unitary dynamics, and is reassembled in the other system after a characteristic time consistent with holography predictions. This leads to revival oscillations that at low but finite temperature decay as a power-law in time. For small $N$ we also observe revivals and show that they arise from a different, non-gravitational mechanism.
