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arXiv 1906.09113hep-thgr-qc
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全息术中的爱因斯坦环

Einstein Rings in Holography

Koji Hashimoto, Shunichiro Kinoshita, Keiju Murata

摘要:

阐明给定量子场论(QFT)引力图像存在的条件是AdS/CFT对应的基本问题之一。我们提出了一个直接的方法来证明双黑洞的存在:成像一个爱因斯坦环。我们考虑了二维球上的热量子场论在时间周期局域源作用下的响应函数。对偶引力图像,如果它存在的话,是一个黑洞在一个渐近的全球AdS $_4$和一个散装探测场与本地化的源上的AdS边界。响应函数对应于在黑洞时空中传播的体场的渐近数据。我们找到一个公式,将响应函数的图像的双重黑洞:从一个点的边界上的天空的AdS散装的看法。利用这个公式,我们证明了,对于Schwarzschild-AdS $_4$时空的热态对偶,爱因斯坦环是由响应函数构造的。估计的爱因斯坦半径被发现是由双QFT的总能量。我们的理论提议为强关联材料上的引力现象打开了一扇大门。

英文摘要:

Clarifying conditions for the existence of a gravitational picture for a given quantum field theory (QFT) is one of the fundamental problems in the AdS/CFT correspondence. We propose a direct way to demonstrate the existence of the dual black holes: imaging an Einstein ring. We consider a response function of the thermal QFT on a two-dimensional sphere under a time-periodic localized source. The dual gravity picture, if it exists, is a black hole in an asymptotic global AdS$_4$ and a bulk probe field with a localized source on the AdS boundary. The response function corresponds to the asymptotic data of the bulk field propagating in the black hole spacetime. We find a formula that converts the response function to the image of the dual black hole: The view of the sky of the AdS bulk from a point on the boundary. Using the formula, we demonstrate that, for a thermal state dual to the Schwarzschild-AdS$_4$ spacetime, the Einstein ring is constructed from the response function. The evaluated Einstein radius is found to be determined by the total energy of the dual QFT. Our theoretical proposal opens a door to gravitational phenomena on strongly correlated materials.

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