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arXiv 1901.04554hep-thgr-qc
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De Sitter空间与纠缠

De Sitter Space and Entanglement

Cesar Arias, Felipe Diaz, Per Sundell

摘要:

我们认为,在德西特空间的纠缠的概念自然产生的时空流形,其中包括两个断开的边界和因果断开内部的非平凡洛伦兹几何。在四维空间中,我们提出了一个全息描述的惯性观察者在两个边界希尔伯特空间的张量积的热场双态,从而Gibbons-霍金公式出现的全息纠缠熵之间的过去和未来的共形无限。当考虑两个因果断开的Rindler楔之间的大量纠缠时,我们表明,相应的纠缠熵是由一对余维2最小表面的面积的四分之一,定义的dS $_4/\mathbb Z_q$ orbifold的不动点集。

英文摘要:

We argue that the notion of entanglement in de Sitter space arises naturally from the non-trivial Lorentzian geometry of the spacetime manifold, which consists of two disconnected boundaries and a causally disconnected interior. In four bulk dimensions, we propose an holographic description of an inertial observer in terms of a thermofield double state in the tensor product of the two boundaries Hilbert spaces, whereby the Gibbons--Hawking formula arises as the holographic entanglement entropy between the past and future conformal infinities. When considering the bulk entanglement between the two causally disconnected Rindler wedges, we show that the corresponding entanglement entropy is given by one quarter of the area of the pair of codimension two minimal surfaces that define the set of fixed points of the dS$_4/\mathbb Z_q$ orbifold.

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