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arXiv · 1006.1732

Entanglement Entropy in an Antiferromagnetic Heisenberg Spin Chain with Boundary Impurities

Jie Ren·Shiqun Zhu·Xiang Hao
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Abstract

The effects of boundary impurities on the entanglement entropy in an antiferromagnetic Heisenberg opened spin-$1/2$ chain are investigated. The method of density-matrix renormalization-group is used to obtain the bipartite entanglement. The entropy increases when the length of the subsystem increases. It will approach to a constant when system length is very large. With the same impurity interaction, qutrit impurities of spin-$1$ can increase the entanglement entropy.

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Jie Ren, Shiqun Zhu, Xiang Hao. 2010-06-09. Entanglement Entropy in an Antiferromagnetic Heisenberg Spin Chain with Boundary Impurities. https://doi.org/10.1088/0953-4075/42/1/015504

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