论文标题
四维宇宙学背景的纠缠熵
Entanglement entropy in a four-dimensional cosmological background
论文作者
论文摘要
我们计算在四个维度的时间依赖性背景下，在四个维度的时间依赖性的背景上计算了全息纠缠熵。我们认为板构型延伸到弗里德曼 - 罗伯逊 - 罗伯逊 - 步行者指标的宇宙学范围之外。我们确定了与CFT的热熵相对应的体积项，以及与纠缠表面的适当区域成正比的术语，该术语与该表面附近的强烈纠缠自由度相关。
We compute the holographic entanglement entropy of a thermalized CFT on a time-dependent background in four dimensions. We consider a slab configuration extending beyond the cosmological horizon of a Friedmann-Lemaitre-Robertson-Walker metric. We identify a volume term that corresponds to the thermal entropy of the CFT, as well as terms proportional to the proper area of the entangling surface which are associated with strongly entangled degrees of freedom in the vicinity of this surface or with the expansion.
