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arXiv 1806.05976hep-th
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AdS-Gauss-Bonnet引力中小纠缠区的全息热化

Holographic thermalization in AdS-Gauss-Bonnet gravity for small entangled regions

Hossein Ghaffarnejad, Emad Yaraie, Mohammad Farsam

摘要:

本文研究了在AdS体的CFT边界上发生全局瞬时猝灭后纠缠熵的传播。我们考虑高斯-邦纳模型作为一个更高曲率的引力模型,我们纠正RT(HRT)的建议,计算全息纠缠熵(HEE)。为了获得一个解析解,我们执行一个近似的方法,我们的计算范围小的子区域,我们比较其热化制度的结果大子系统的情况。我们可以看到海啸的图片,其中纠缠的演变打破了大系统,因此它的细节只取决于纠缠区域的形状和大小,以及所使用的引力模型。我们可以看到,无论形状和尺寸如何,在这个区域中的相变总是连续的,而在大的子区域中则相反。

英文摘要:

In this paper we study the propagation of entanglement entropy after a global instantaneous quench on the CFT boundary of AdS bulk. We consider the Gauss-Bonnet model as a higher curvature gravity model for which we correct the RT(HRT) proposal to compute the holographic entanglement entropy(HEE). To obtain an analytical solution we perform an approximation approach which bounds our computations to the small subregions and we compare its thermalization regimes to the result of large subsystem case. We can see tsunami picture where the evolution of entanglement breaks down for the large systems and so its details depends just on the shape and size of entangled region and also the used gravity model. We can see the phase transition in this regime is always continuous regardless the shape and size, in contrary with large subregions.

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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