[1] Bose Sougato. Quantum communication through an unmodulated spin chain ［J］. Phys. Rev. Lett., 2003, 91: 207901.

[6] Hao Xiang, Zhu Shiqun. Entanglement in a spin-s antiferromagnetic Heisenberg chain ［J］. Phys. Rev. A, 2005, 72: 042306.

[7] Wang Xiaoguang. Boundary and impurity effects on the entanglement of Heisenberg chains ［J］. Phys. Rev. E, 2004, 69: 066118.

[8] Amico Luigi. Entanglement in many-body systems ［J］. Rev. Mod. Phys., 2008, 80: 517.

[9] Wang Xiaoguang. Entanglement in the quantum Heisenberg XY model ［J］. Phys. Rev. A, 2001, 64: 012313.

[10] Gu Shijian, Tian Guanshan, Hai Qinglin. Ground-state entanglement in the XXZ model ［J］. Phys. Rev. A, 2005, 71: 052322.

[11] Ren Jie, Zhu Shiqun. Density-matrix renormalization-group study of entanglement and entropy in an antiferromagnetic Heisenberg spin chain with domain walls ［J］. Phys. Rev. A, 2008, 77: 034303.

[12] Cao Min, Zhu Shiqun. Thermal entanglement between alternate qubits of a four-qubit Heisenberg XX chain in a magnetic field ［J］. Phys. Rev. A, 2005, 71: 034311.

[13] Wang Xiaoguang. Thermal and ground-state entanglement in Heisenberg XX qubit rings ［J］. Phys. Rev. A, 2002, 66: 034302.

[14] Alberto Anfossi, Paolo Giorda. Two-point versus multipartite entanglement in quantum phase transitions ［J］. Phys. Rev. Lett., 2005, 95: 056402.

[15] Gu Shijian. Entanglement and quantum phase transition in the extended Hubbard model ［J］. Phys. Rev. Lett., 2004, 93: 086402.

[18] Pan Feng. Permutation group approach to the one-dimensional XXX Heisenberg open spin-1/2 chains ［J］. International Journal of Modern Physics, 2004, C15: 247-265.

[19] Yu Jiangde, Wang Xijie. Semantic role labeling based on maximum entropy model ［J］. Microelectronics & Computer, 2010, 27(8): 174.