Study of Dynamics in Spin-1/2 Chain Using Adaptive Time-Dependent Density-Matrix Renormalization-Group Method |
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| Authors: | Jie Ren Yinzhong Wu Shiqun Zhu |
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| Institution: | 1. Department of Physics and Jiangsu Laboratory of Advanced Functional Material, Changshu Institute of Technology, Changshu, 215500, P.R. China
2. School of Physical Science and Technology, Soochow University, Suzhou, Jiangsu, 215006, P.R. China
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| Abstract: | A numerical method of the adaptive time-dependent density-matrix renormalization-group (t-DMRG) is introduced to calculated one-dimensional quantum spin systems with next-nearest-neighbor interaction. The algorithm to study the local magnetization in spin-1/2 Heisenberg XX chain is checked. The analysis of error indicates that this method is efficient to study the spin-1/2 chain with next-nearest-neighbor interaction. By using of the method, the effects of the next-nearest-neighbor interaction on the dynamics of the local magnetization and entanglement entropy are studied. |
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