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arXiv · 0803.0013

Block Entanglement Entropy of Ground States with Long-Range Magnetic Order

Wenxin Ding·Nicholas E. Bonesteel·Kun Yang
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Abstract

In this paper we calculate the block entanglement entropies of spin models whose ground states have perfect antiferromagnetic or ferromagnetic long-range order. In the latter case the definition of entanglement entropy is extended to properly take into account the ground state degeneracy. We find in both cases the entropy grows logarithmically with the block size. Implication of our results on states with general long-range order will be discussed.

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Wenxin Ding, Nicholas E. Bonesteel, Kun Yang. 2008-05-16. Block Entanglement Entropy of Ground States with Long-Range Magnetic Order. https://doi.org/10.1103/physreva.77.052109

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