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arXiv 1405.3553hep-th
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AdS平面波、纠缠和互信息

AdS plane waves, entanglement and mutual information

Debangshu Mukherjee, K. Narayan

摘要:

$AdS$平面波背景与能量动量密度为$T_{++}=Q$的CFT激发态是对偶的。基于以前的工作纠缠熵在这些和非共形膜平面波背景下,我们首先描述了一个唯象的“纠缠部分子”的纠缠标度图片。然后,我们研究方面的全息互信息在这些背景下的两个条形子系统,平行或正交的磁通量对齐。我们专注于宽($Ql^d\gg 1$)和窄($Ql^d\ll 1$)条制度。在宽带制度,互信息表现出增长与个别带的大小和解缠过渡带之间的分离增加,其行为是不同的地面和热状态。在窄带情况下,我们的计算与这些$AdS$平面波变形的“纠缠热力学”有相似之处。我们还讨论了一些数值分析。

英文摘要:

$AdS$ plane wave backgrounds are dual to CFT excited states with energy momentum density $T_{++}=Q$. Building on previous work on entanglement entropy in these and nonconformal brane plane wave backgrounds, we first describe a phenomenological scaling picture for entanglement in terms of "entangling partons". We then study aspects of holographic mutual information in these backgrounds for two strip shaped subsystems, aligned parallel or orthogonal to the flux. We focus on the wide ($Ql^d\gg 1$) and narrow ($Ql^d\ll 1$) strip regimes. In the wide strip regime, mutual information exhibits growth with the individual strip sizes and a disentangling transition as the separation between the strips increases, whose behaviour is distinct from the ground and thermal states. In the narrow strip case, our calculations have parallels with "entanglement thermodynamics" for these $AdS$ plane wave deformations. We also discuss some numerical analysis.

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