Entanglement in spin-1/2 dimerized Heisenberg systems
Quantum Physics
2015-06-26 v1
Abstract
We study entanglement in dimerized Heisenberg systems. In particular, we give exact results of ground-state pairwise entanglement for the four-qubit model by identifying a Z_2 symmetry. Although the entanglements cannot identify the critical point of the system, the mean entanglement of nearest-neighbor qubits really does, namely, it reaches a maximum at the critical point.
Cite
@article{arxiv.quant-ph/0501117,
title = {Entanglement in spin-1/2 dimerized Heisenberg systems},
author = {Zhe Sun and XiaoGuang Wang and AnZi Hu and You-Quan Li},
journal= {arXiv preprint arXiv:quant-ph/0501117},
year = {2015}
}
Comments
Four pages, three figures, accepted in Communications in Theoretical Physics