摘要
We numerically study the fidelity of an electron in the one-dimensional Harper model and in the one-dimensional slowly varying potential model. Our results show that many properties of the two models can be well reflected by the fidelity： （i） the mobility edge and metal-insulator transition can be characterized by the static fidelity; （ii） the extended state and localized state can be identified by the dynamic fidelity. Therefore, it may broaden the applied areas of the fidelity.
We numerically study the fidelity of an electron in the one-dimensional Harper model and in the one-dimensional slowly varying potential model. Our results show that many properties of the two models can be well reflected by the fidelity： （i） the mobility edge and metal-insulator transition can be characterized by the static fidelity; （ii） the extended state and localized state can be identified by the dynamic fidelity. Therefore, it may broaden the applied areas of the fidelity.
基金
Project supported by the National Natural Science Foundation of China (Grant No 10674072)
the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No 20060319007)
