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arXiv 2301.06285hep-thgr-qc
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楔形全息中的纠缠岛与佩奇曲线

Entanglement Island and Page Curve in Wedge Holography

Rong-Xin Miao

AI总结:

本文通过在楔形全息膜上引入DGP引力或高阶导数引力,恢复了此前被认为会消失的无质量纠缠岛,并在两类典型构型中得到非平凡佩奇曲线,从而支持纠缠岛可存在于长程引力理论中。

摘要:

纠缠岛在近期解决黑洞信息悖论的突破中发挥着重要作用。然而,纠缠岛能否存在于无质量引力理论中仍存在争议。研究发现,在膜上具有无质量引力的楔形全息初始模型中,纠缠岛会消失。其结果是,霍金辐射的纠缠熵变为与时间无关的常数,并且不存在佩奇曲线。在本文中,我们通过在膜上引入合适的DGP引力或高阶导数引力,在楔形全息中恢复了无质量纠缠岛。我们研究了两种典型情形。在第一种情形中,我们考虑强引力膜上的一个黑洞和弱引力膜上的一个热浴。这类似于通常的具有非引力热浴的双重全息。在第二种情形中,我们讨论两个膜上具有相同引力强度的两个黑洞。我们在两种情形中都恢复了无质量纠缠岛和非平凡的佩奇曲线。我们还论证了纠缠岛与无质量引力是相容的。我们的结果有力地支持纠缠岛可以存在于长程引力理论中。

英文摘要:

Entanglement islands play an essential role in the recent breakthrough in resolving the black hole information paradox. However, whether entanglement islands can exist in massless gravity theories is controversial. It is found that entanglement islands disappear in the initial model of wedge holography with massless gravity on the brane. As a result, the entanglement entropy of Hawking radiation becomes a time-independent constant, and there is no Page curve. In this paper, we recover massless entanglement islands in wedge holography with suitable DGP gravity or higher derivative gravity on the branes. We study two typical cases. In the first case, we consider a black hole on the strong-gravity brane and a bath on the weak-gravity brane. It is similar to the usual double holography with non-gravitational baths. In the second case, we discuss two black holes on the two branes with the same gravitational strength. We recover massless entanglement islands and non-trivial Page curves in both cases. We also argue that the entanglement island is consistent with massless gravity. Our results strongly support that entanglement islands can exist in long-range theories of gravity.

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