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arXiv 2201.00020cond-mat.str-elcond-mat.mes-hall
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分数量子霍尔效应中共形希尔伯特空间的几何涨落与多重引力子模式

Geometric Fluctuation of Conformal Hilbert Spaces and Multiple Graviton Modes in Fractional Quantum Hall Effect

Yuzhu Wang, Bo Yang

AI总结:

本文建立了分数量子霍尔流体中多重引力子模式的微观理论,揭示其源于共形希尔伯特空间的几何涨落,并数值验证了模式数量及合并劈裂规律。

摘要:

分数量子霍尔(FQH)流体中的中性激发定义了拓扑相的不可压缩性,其中一类中性激发可以表现出类引力子行为,因此被称为引力子模式(GMs)。在此,我们建立了FQH流体中多重GMs的微观理论,并明确表明它们与良好定义的共形希尔伯特空间(CHSs)的几何涨落相关,这些CHSs是单个朗道能级内的层级子空间,每个子空间都具有涌现共形对称性,并由一个幺模度量连续参数化。这引出了关于GMs的数量以及合并/劈裂的若干论断,这些论断通过模型相互作用和现实相互作用进行了数值验证。我们还讨论了该微观理论如何作为有效场论描述中额外Haldane模式的基础,以及它们与现实电子-电子相互作用的实验相关性。

英文摘要:

Neutral excitations in fractional quantum Hall (FQH) fluids define the incompressibility of topological phases, a species of which can show graviton-like behaviors and are thus called the graviton modes (GMs). Here, we develop the microscopic theory for multiple GMs in FQH fluids and show explicitly that they are associated with the geometric fluctuation of well-defined conformal Hilbert spaces (CHSs), which are hierarchical subspaces within a single Landau level, each with emergent conformal symmetry and continuously parameterized by a unimodular metric. This leads to several statements about the number and the merging/splitting of GMs, which are verified numerically with both model and realistic interactions. We also discuss how the microscopic theory can serve as the basis for the additional Haldane modes in the effective field theory description and their experimental relevance to realistic electron-electron interactions.

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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