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arXiv 1209.6368hep-th
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标量纠缠的追踪

Tracing Through Scalar Entanglement

Christopher P. Herzog, Michael Spillane

摘要:

作为带隙系统的玩具模型,我们研究了非零温度下1+1维大质量标量场的纠缠熵。在小的质量m和温度T的限制下,我们把上和下界的协方差矩阵的两个最大的特征值用于计算的纠缠熵。我们认为,当m >> T时,纠缠熵具有exp(-m/T)标度.我们评论我们的工作和Ryu-Takayanagi建议计算的纠缠熵全息之间的关系。

英文摘要:

As a toy model of a gapped system, we investigate the entanglement entropy of a massive scalar field in 1+1 dimensions at nonzero temperature. In a small mass m and temperature T limit, we put upper and lower bounds on the two largest eigenvalues of the covariance matrix used to compute the entanglement entropy. We argue that the entanglement entropy has exp(-m/T) scaling in the limit m >> T. We comment on the relation between our work and the Ryu-Takayanagi proposal for computing the entanglement entropy holographically.

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