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arXiv 1602.04825hep-th
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自顶向下模型中的纠缠熵

Entanglement entropy in top-down models

Peter A. R. Jones, Marika Taylor

摘要:

我们探讨了十维超引力解中的全息纠缠熵。有人提出,纠缠熵可以计算在这样的自上而下的模型,使用最小的表面渐近包装的紧凑部分的几何形状。我们明确地表明,在广泛的例子,全息纠缠熵,从而计算同意的纠缠熵计算使用Ryu-Takayanagi公式从低维爱因斯坦度量从减少在紧凑的空间。我们的例子不仅包括一致的截断,但也没有一致的截断存在的情况下,卡鲁扎-克莱因全息被用来确定低维爱因斯坦度量。基于Lewkowycz-Maldacena方法,给出了自上而下的纠缠熵公式的一般性证明.

英文摘要:

We explore holographic entanglement entropy in ten-dimensional supergravity solutions. It has been proposed that entanglement entropy can be computed in such top-down models using minimal surfaces which asymptotically wrap the compact part of the geometry. We show explicitly in a wide range of examples that the holographic entanglement entropy thus computed agrees with the entanglement entropy computed using the Ryu-Takayanagi formula from the lower-dimensional Einstein metric obtained from reduction over the compact space. Our examples include not only consistent truncations but also cases in which no consistent truncation exists and Kaluza-Klein holography is used to identify the lower-dimensional Einstein metric. We then give a general proof, based on the Lewkowycz-Maldacena approach, of the top-down entanglement entropy formula.

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