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arXiv 1607.02115gr-qchep-phquant-ph
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真空态与de Sitter视界的纠缠:全息暗能量的结果

Entanglement of Vacuum States With the de Sitter Horizon: Consequences on Holographic Dark Energy

Rafael Pavão, Ricardo Faleiro, Alex H. Blin, Brigitte Hiller

摘要:

本文的目的是研究事件视界对量子真空纠缠的影响,以及纠缠与全息原理如何结合最近的理论解释宇宙学常数的当前值。利用Peres-Horodecki(PPT)判据,对离de Sitter宇宙视界很近和很远的真空态进行了纠缠检验。将标量真空场($\hatϕ$)在两个不同空间位置的体积盒$V$内平均,得到二分量子谐振子的结构,PPT判据是其可分性的必要但非充分条件.当其中一个状态在视界附近,而另一个状态在宇宙中的任何地方时,从厚度为一个普朗克距离($l_p$)的球形壳盒中获得的状态之间就会出现纠缠。当靠近视界的态与视界的距离增加到$5l_p$附近时,纠缠消失。如果我们不把视界看作一个表面,而是看作一个厚度为$l_p$的球壳,那么这意味着视界中的态和宇宙的其余部分之间存在纠缠。当两个态与视界的距离大于$\sim 5 l_p$时,没有发现纠缠。

英文摘要:

The aim of this article is to study the effect of an Event Horizon on the entanglement of the Quantum Vacuum and how entanglement, together with the Holographic Principle, may explain the current value of the Cosmological Constant, in light of recent theories. Entanglement is tested for vacuum states very near and very far from the Horizon of a de Sitter Universe, using the Peres-Horodecki (PPT) criterion. A scalar vacuum field ($\hatϕ$) is averaged inside two boxes of volume $V$ in different spatial positions such that it acquires the structure of a bipartite Quantum Harmonic Oscillator, for which the PPT criterion is a necessary but not sufficient condition of separability. Entanglement is found between states obtained from boxes shaped as spherical shells with thickness of the order of one Planck distance ($l_p$), when one of the states is near the Horizon, and the other state is anywhere in the Universe. Entanglement disappears when the distance of the state near the horizon and the Horizon increases to around $5l_p$. If we consider the Horizon not as a surface but as a spherical shell of thickness $l_p$, then this means that there is entanglement between the states in the Horizon and the rest of the Universe. When both states are at distances larger than $\sim 5 l_p$ from the Horizon, no entanglement is found.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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