Information paradox and its resolution in de Sitter holography
Information paradox and its resolution in de Sitter holography
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DOI：
10.1103/physrevd.103.126004
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发表时间：
2021-03
影响因子：
5
通讯作者：
H. Geng;Y. Nomura;Hao-Yu Sun
中科院分区：
文献类型：
--
作者：
H. Geng;Y. Nomura;Hao-Yu Sun
我们提出了德西特时空中的信息悖论的一个版本，并表明它是通过DS/ DS对应背景下纠缠岛的出现来解决的；特别是，子区域的纠缠熵服从随时间变化的Page曲线。我们的构造在一般的时空维度中工作，并保持引力子无质量。我们用双全息术解释了纠缠熵的结果行为。它表明微观自由度的空间分布取决于描述，就像黑洞的情况一样。在德西特（黑洞）时空的静态（遥远）描述中，这些自由度代表了与吉本斯-霍金（贝肯斯坦-霍金）熵相关的微观状态，并且定位于视界。另一方面，在由解析延拓的量子模拟得到的本质为半经典的全局（有效双面）描述中，它们均匀分布在唯一的半经典德西特（黑洞）真空态中。
We formulate a version of the information paradox in de Sitter spacetime and show that it is solved by the emergence of entanglement islands in the context of the DS/dS correspondence; in particular, the entanglement entropy of a subregion obeys a time-dependent Page curve. Our construction works in general spacetime dimensions and keeps the graviton massless. We interpret the resulting behavior of the entanglement entropy using double holography. It suggests that the spatial distribution of microscopic degrees of freedom depends on descriptions, as in the case of a black hole. In the static (distant) description of de Sitter (black hole) spacetime, these degrees of freedom represent microstates associated with the Gibbons-Hawking (Bekenstein-Hawking) entropy and are localized toward the horizon. On the other hand, in a global (effective two-sided) description, which is obtained by the quantum analog of analytic continuation and is intrinsically semiclassical, they are distributed uniformly and in a unique semiclassical de Sitter (black hole) vacuum state.