Complex entangling surfaces for AdS and Lifshitz black holes

@article{Fischetti2014ComplexES,
  title={Complex entangling surfaces for AdS and Lifshitz black holes},
  author={S. Fischetti and D. Marolf},
  journal={Classical and Quantum Gravity},
  year={2014},
  volume={31},
  pages={214005-214005}
}
We discuss the possible relevance of complex codimension-two extremal surfaces to the Ryu?Takayanagi holographic entanglement proposal and its covariant Hubeny?Rangamani?Takayanagi generalization. Such surfaces live in a complexified bulk spacetime defined by analytic continuation. We identify surfaces of this type for BTZ, Schwarzschild?AdS, and Schwarzschild?Lifshitz planar black holes. Since the dual CFT interpretation for the imaginary part of their areas is unclear, we focus on a straw man… Expand
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