arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.3073cond-mat.str-elcond-mat.mes-hallquant-ph
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半解析分数量子Hall晶格模型中的任意子编织

Anyon braiding in semi-analytical fractional quantum Hall lattice models

Anne E. B. Nielsen

摘要:

主要通过考虑基态性质,数值计算证明了分数量子霍尔物理可以出现在格点系统中,但直接研究任意子是非常困难的。在这里,我建议解决这个问题,通过使用共形场论,以建立半解析的分数量子霍尔晶格模型,任意子在其基态,我进行明确的家庭玻色子和费米子劳克林状态的建设。这使我能够直接表明,任意子的编织属性是那些预期从波函数的解析延拓和计算的性质,如内部结构,大小和电荷的任意子与简单的蒙特卡罗模拟。这些模型也可以用来研究任意子在接近甚至穿过样本边缘时的行为。最后,我计算了任意子所看到的有效磁场,它由于晶格的存在而周期性地变化。

英文摘要:

It has been demonstrated numerically, mainly by considering ground state properties, that fractional quantum Hall physics can appear in lattice systems, but it is very difficult to study the anyons directly. Here, I propose to solve this problem by using conformal field theory to build semi-analytical fractional quantum Hall lattice models having anyons in their ground states, and I carry out the construction explicitly for the family of bosonic and fermionic Laughlin states. This enables me to show directly that the braiding properties of the anyons are those expected from analytical continuation of the wave functions and to compute properties such as internal structure, size, and charge of the anyons with simple Monte Carlo simulations. The models can also be used to study how the anyons behave when they approach or even pass through the edge of the sample. Finally, I compute the effective magnetic field seen by the anyons, which varies periodically due to the presence of the lattice.

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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