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arXiv 1502.06998cond-mat.str-el
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Chern绝缘体中的位置-动量对偶性和分数量子霍尔效应

Position-Momentum Duality and Fractional Quantum Hall Effect in Chern Insulators

Martin Claassen, Ching Hua Lee, Ronny Thomale, Xiao-Liang Qi, Thomas P. Devereaux

摘要:

我们开发了一个第一次量子化描述的分数陈绝缘体,这是传统的分数量子霍尔(FractionalquantumHall,简称FWHH)问题的对偶,位置和动量的角色互换。在这幅图中,在波动的磁场中,动量空间朗道能级中形成的各向异性的H2O H液体描述了H2O H态。这个问题的基本量子几何来自于单体和相互作用度规的相互作用,这两者都充当各向异性量子力学效应的几何图像的动量-空间矩阵。然后,我们提出了一种新的广泛的类的理想陈绝缘体晶格模型,作为各向同性的EZH效应。相互作用的问题是很好地捕捉到的Halfton赝势,并提供了一个详细的微观理解的相互作用和非平凡的量子几何的相互作用。

英文摘要:

We develop a first quantization description of fractional Chern insulators that is the dual of the conventional fractional quantum Hall (FQH) problem, with the roles of position and momentum interchanged. In this picture, FQH states are described by anisotropic FQH liquids forming in momentum-space Landau levels in a fluctuating magnetic field. The fundamental quantum geometry of the problem emerges from the interplay of single-body and interaction metrics, both of which act as momentum-space duals of the geometrical picture of the anisotropic FQH effect. We then present a novel broad class of ideal Chern insulator lattice models that act as duals of the isotropic FQH effect. The interacting problem is well-captured by Haldane pseudopotentials and affords a detailed microscopic understanding of the interplay of interactions and non-trivial quantum geometry.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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