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Localized - delocalized electron quantum phase transitions

机译:局域-非局域电子量子相变

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摘要

Metal-insulator transitions and transitions between different quantum Hall liquids are used to describe the physical ideas forming the basis of quantum phase transitions and the methods of application of theoretical results in processing experimental data. The following two theoretical schemes are discussed and compared: the general theory of quantum phase transitions, which has been developed according to the theory of thermodynamic phase transitions and relies on the concept of a partition function, and a theory that is based on a scaling hypothesis and the renormalization-group concept borrowed from quantum electrodynamics, with the results formulated in terms of flow diagrams.
机译:金属-绝缘体的跃迁以及不同量子霍尔液体之间的跃迁用于描述构成量子相变基础的物理思想,以及在处理实验数据中应用理论结果的方法。讨论并比较了以下两个理论方案:量子相变的一般理论(根据热力学相变的理论而开发,它依赖于分配函数的概念),以及基于缩放假设的理论。重新归一化组概念是从量子电动力学中借用的,其结果以流程图的形式表达。

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