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Geometric construction of Quantum Hall clustering Hamiltonians

机译:量子霍尔聚类Hamilton系数的几何构造

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摘要

Many fractional quantum Hall wave functions are known to be unique andhighest-density zero modes of certain "pseudopotential" Hamiltonians. Examplesinclude the Read-Rezayi series (in particular, the Laughlin, Moore-Read andRead-Rezayi Z_3 states), and more exotic non-unitary (Haldane-Rezayi, Gaffnianstates) or irrational states (Haffnian state). While a systematic method toconstruct such Hamiltonians is available for the infinite plane or spheregeometry, its generalization to manifolds such as the cylinder or torus, whererelative angular momentum is not an exact quantum number, has remained an openproblem. Here we develop a geometric approach for constructing pseudopotentialHamiltonians in a universal manner that naturally applies to all geometries.Our method generalizes to the multicomponent SU(n) cases with a combination ofspin or pseudospin (layer, subband, valley) degrees of freedom. We demonstratethe utility of the approach through several examples, including certainnon-Abelian multicomponent states whose parent Hamiltonians were previouslyunknown, and verify the method by numerically computing their entanglementproperties.
机译:众所周知,许多分数量子霍尔波函数是某些“伪势”哈密顿量的唯一且最高密度的零模。示例包括Read-Rezayi系列(特别是Laughlin,Moore-Read和Read-Rezayi Z_3州),以及更奇特的非单一状态(Haldane-Rezayi,Gaffnian州)或非理性州(Haffnian州)。尽管有一种构造这种哈密顿量的系统方法可用于无限平面或球面几何,但将其推广到诸如相对角动量不是精确量子数的圆柱或圆环等流形时,仍然是一个开放问题。在这里,我们开发了一种以通用方式构造伪势哈密顿量的几何方法,该方法自然适用于所有几何形状。我们的方法适用于具有自旋或伪自旋(层,子带,谷)自由度组合的多分量SU(n)情况。我们通过几个示例(包括其父代哈密顿量以前未知的某些非阿贝尔多分量状态)演示了该方法的实用性,并通过数值计算其纠缠特性来验证该方法。

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