Yong-Zhuang Li, Shao-Feng Wu, Yong-Qiang Wang, Guo-Hong Yang
We study the holographic entanglement entropy with the large entangling region in a homogeneous falling shell background, which is dual to the strongly coupled field theory following a global quench. For d=2 conformal field theories, we demonstrate analytically that the entropy has a linear growth rate approaching a constant limit. The nonlocal behavior is directly related to the part of minimal area surface probing the interior of apparent horizons in the bulk, as well as the mutual information between two disjoint rectangular subsystems in the boundary. We also show numerically that all the results are universal for the d=3 conformal field theory, the non-relativistic scale-invariant theory and the dual theory of Gauss-Bonnet gravity.
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http://arxiv.org/abs/1306.0210
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