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arXiv 2603.14722cond-mat.str-el
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非阿贝尔分数陈数绝缘体的可解双体模型

Non-Abelian fractional Chern insulators from an exactly solvable two-body model

Washington University in St. Louis(华盛顿大学圣路易斯分校)

Joseph R. Cruise, Alexander Seidel

AI总结:

本文提出一种可解的晶格哈密顿量,其单粒子能谱包含任意数量的精确简并平带,能复现受限晶格下的前p个陆德奥级数的解析结构,并通过精确对角化验证了模型对玻色贾因-21态及非阿贝尔22-和33态的支持。

摘要:

我们构造了一类晶格哈密顿量,其单粒子能谱由任意数量的精确简并平带组成,这些平带能复现受限晶格下的前p个陆德奥级数的解析结构。当与局域玻色子接触相互作用结合时,这些模型成为可解的费米子绝缘体(FCIs)的父哈密顿量,能够实现阿贝尔和非阿贝尔部分子量子霍尔态。通过精确对角化,我们验证了模型稳定化玻色贾因-21态以及非阿贝尔22-和33态的零模计数,这些态分别支持伊辛型和斐波那契型任意子。本文的构造提供了多陆德奥级数物理的可解晶格实现,并为研究具有陈数C>1的FCIs提供了新框架。更广泛地说,它提供了一类理想化的晶格模型,能够捕捉连续陆德奥级数的解析结构,同时保持与指数级局部跃迁的兼容性。

英文摘要:

We construct a class of lattice Hamiltonians whose single-particle spectrum consists of an arbitrary number of exactly degenerate flat bands that reproduce the analytic structure of the first $p$ Landau levels restricted to the lattice. When combined with local bosonic contact interactions, these models become exactly solvable frustration-free parent Hamiltonians for FCIs that realize both Abelian and non-Abelian parton quantum Hall states. Using exact diagonalization, we confirm the expected zero-mode counting for variants of the model stabilizing the bosonic Jain-21 state as well as the non-Abelian 22- and 33-states, which are expected to support Ising- and Fibonacci-type anyons, respectively. Our construction provides an exactly solvable lattice realization of multi Landau-level physics and offers a new framework for studying FCIs with Chern number $C > 1$. More broadly, it supplies a family of idealized lattice models that capture the analytic structure of continuum Landau levels while remaining compatible with exponentially local hopping.

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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