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Entanglement Entropy in an Antiferromagnetic Heisenberg Spin Chain with Boundary Impurities
Jie Ren, Shiqun Zhu, Xiang Hao
The effects of boundary impurities on the entanglement entropy in an antiferromagnetic Heisenberg opened spin- chain are investigated. The method of density-matrix renormaliza…
Quench Dynamics of Entanglement in an Opened Anisotropic Spin-1/2 Heisenberg Chain
Jie Ren, Shiqun Zhu
The quantum entanglement dynamics of a one-dimensional spin-1/2 anisotropic XXZ model is studied using the method of the adaptive time-dependent density-matrix renormalization-grou…
Entanglement, fidelity, and quantum phase transition in antiferromagnetic-ferromagnetic alternating Heisenberg chain
Jie Re, Shiqun Zhu
The fidelity and entanglement entropy in an antiferromagnetic-ferromagnetic alternating Heisenberg chain are investigated by using the method of density-matrix renormalization-grou…
Fidelity and entanglement close to quantum phase transition in a two-leg spin ladder
Jie Ren, Shiqun Zhu
The fidelity susceptibility and entanglement entropy in a system of two-leg spin ladder with rung coupling is investigated by using exact diagonalization of the system. The e…