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Vison states and confinement transitions of Z_2 spin liquids on the kagome lattice

机译:Kagome晶格上Z_2自旋液体的Vison态和约束跃迁

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摘要

We present a projective symmetry group (PSG) analysis of the spinless excitations of Z_2 spin liquids on the kagome lattice. In the simplest case, vortices carrying Z_2 magnetic flux ("visons") are shown to transform under the 48 element group GL(2,Z_3). Alternative exchange couplings can also lead to a second case with visons transforming under 288-element group GL(2,Z_3) × D_3. We study the quantum phase transition in which visons condense into confining states with valence bond solid order. The critical field theories and confining states are classified using the vison PSGs.
机译:我们提出了射影对称组(PSG)分析的kagome晶格上Z_2自旋液体的无自旋激发。在最简单的情况下,带有Z_2磁通量(“维松子”)的涡流显示在48个元素组GL(2,Z_3)下转变。替换交换耦合也可能导致在288个元素组GL(2,Z_3)×D_3下进行维子变换的第二种情况。我们研究了量子态相变,在该相变中,维森斯以价键固体顺序凝结为约束态。临界场理论和限制状态是使用vison PSG进行分类的。

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  • 来源
    《Physical review》 |2011年第9期|p.094419.1-094419.13|共13页
  • 作者单位

    Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA;

    Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA;

    Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA;

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