# On the entanglement across a cubic interface in 3+1 dimensions

@article{Devakul2014OnTE,
title={On the entanglement across a cubic interface in 3+1 dimensions},
author={Trithep Devakul and Rajiv R. P. Singh},
journal={Physical Review B},
year={2014},
volume={90},
pages={054415}
}
• Published 1 July 2014
• Physics
• Physical Review B
We calculate the area, edge and corner Renyi entanglement entropies in the ground state of the transverse-field Ising model, on a simple-cubic lattice, by high-field and low-field series expansions. We find that while the area term is positive and the line term is negative as required by strong subadditivity, the corner contributions are positive in 3-dimensions. Analysis of the series suggests that the expansions converge up to the physical critical point from both sides. The leading area-law… Expand

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