一维关联无序系统中的电子态

Electronic States in One-dimensional Correlated Disorder Systems

讨论了长程幂率关联对一维无序系统本征波函数、本征能量和并发纠缠的影响,并研究了这3个测度对系统局域性的表征程度.结果表明,只有并发纠缠能够充分反映系统空间关联的特性.作为关联Anderson模型的例子,研究了准周期模型和无序模型下的DNA分子链的并发纠缠,发现准周期DNA模型的并发纠缠与关联无序Anderson模型的并发纠缠有类似性质,说明DNA链具有空间关联的特征.

The effects of long-range power-law correlation on the eigenenergy, eigenfunction and entanglement of one-dimensional disorder system were studied,and the changes Of localization were observed. The results show that only the entanglement of the three measures fully reflects the properties of correlation. As an example of correlation, the entanglement of DNA molecular chain was studied by using the Anderson model. The results show that the entanglement of the quasiperiodic DNA model has similar properties with the correlated disorder Anderson model,impling that the DNA chain has the characteristic of spacial correlation.