Exactness of Linear Response in the Quantum Hall Effect

Exactness of Linear Response in the Quantum Hall Effect
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DOI:
10.1007/s00023-020-00989-z
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发表时间:
2021-01
期刊:
Annales Henri Poincaré
影响因子:
--
通讯作者:
S. Bachmann;Wojciech De Roeck;M. Fraas;Markus Lange
S. Bachmann;Wojciech De Roeck;M. Fraas;Markus Lange
中科院分区:
其他
文献类型:
--
作者:
S. Bachmann;Wojciech De Roeck;M. Fraas;Markus Lange

文献摘要

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一般来说,线性响应理论只在微扰理论中的一阶表示驱动和物理系统响应之间的关系。在电荷传输的背景下,这是电流和电动势之间的线性关系,用欧姆定律表示。我们在这里表明,在量子霍尔效应的情况下,所有高阶校正消失。我们证明了这一点,在一个完全相互作用的设置,没有通量平均。
In general, linear response theory expresses the relation between a driving and a physical system’s response only to first order in perturbation theory. In the context of charge transport, this is the linear relation between current and electromotive force expressed in Ohm’s law. We show here that in the case of the quantum Hall effect, all higher-order corrections vanish. We prove this in a fully interacting setting and without flux averaging.