Low-complexity eigenstates of a ν = 1/3 fractional quantum Hall system

Low-complexity eigenstates of a ν = 1/3 fractional quantum Hall system
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δ = 1/3 分数量子霍尔系统的低复杂性本征态

DOI:
10.1088/1751-8121/abca73
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发表时间:
2021
期刊:
Journal of Physics A: Mathematical and Theoretical
影响因子:
--
通讯作者:
Young, Amanda
Young, Amanda
中科院分区:
--
文献类型:
--
作者:
Nachtergaele, Bruno;Warzel, Simone;Young, Amanda

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我们将薄圆柱几何中霍尔丹赝势哈密顿量的截断版本的基态识别为由指数级多个碎片矩阵乘积状态组成。这些状态是通过晶格平铺构建的,并讨论了它们的性质。我们还报告了光谱间隙的证明,这意味着底层分数量子霍尔液体在最大填充 ν= 1/3 时的不可压缩性。低能量激发和正能量密度下的大量多体疤痕,但复杂性较低,也可以使用平铺的概念来识别。
We identify the ground-state of a truncated version of Haldane's pseudo-potential Hamiltonian in the thin cylinder geometry as being composed of exponentially many fragmented matrix product states. These states are constructed by lattice tilings and their properties are discussed. We also report on a proof of a spectral gap, which implies the incompressibility of the underlying fractional quantum Hall liquid at maximal filling ν= 1/3. Low-energy excitations and an extensive number of many-body scars at positive energy density, but nevertheless low complexity, are also identified using the concept of tilings.
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