Universal properties of quantum network models

我们详细研究了Chalker-Coddington模型的输运性质，重点研究了它的普适量子输运性质。得到了高精度的临界指数。提出了一个描述理想导电通道的新模型，并阐明了它的输运性质。我们还在包含自旋-轨道相互作用的量子网络模型的基础上研究了量子自旋霍尔效应，并研究了无序量子自旋霍尔系统的输运性质。

We have studied in detail the transport properties of the Chalker-Coddington model focusing on its universal quantum transport properties. The critical exponent has been determined with high precision. A new model describing the perfectly conducting channel has been proposed and its transport properties are clarified. We have also studied the quantum spin Hall effect on the basis of a quantum network model that incorporates the spin-orbit interaction, and the transport properties of disordered quantum spin Hall systems have been studied.