Abstract
Existing tensor network models of holography are limited to representing the geometry of constant time slices of static spacetimes. We study the possibility of describing the geometry of a dynamic spacetime using tensor networks. We find it is necessary to give a new definition of length in the network, and propose a definition based on the mutual information. We show that by associating a set of networks with a single quantum state and making use of the mutual information based definition of length, a network analogue of the maximin formula can be used to calculate the entropy of boundary regions.
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ArXiv ePrint: 1611.06220
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May, A. Tensor networks for dynamic spacetimes. J. High Energ. Phys. 2017, 118 (2017). https://doi.org/10.1007/JHEP06(2017)118
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DOI: https://doi.org/10.1007/JHEP06(2017)118