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Construction and field theory of bosonic-symmetry-protected topological states beyond group cohomology

机译:超越群同调的玻对称对称保护态的构建与场论

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摘要

We construct a series of bbosonic-symmetry-protected topological (BSPT) states beyond group cohomology classification using "decorated defects" approach. This construction is based on topological defects of ordinary Landau order parameters, decorated with the bosonic short-range entangled (BSRE) states in (4k + 3)d and (4k + 5)d space-time (with k being nonnegative integers), which do not need any symmetry. This approach not only gives these BSPT states an intuitive physical picture, it also allows us to derive the effective field theory for all these BSPT states beyond group cohomology.
机译:我们使用“修饰的缺陷”方法构造了超出组同构分类的一系列对称对称保护的拓扑(BSPT)状态。此构造基于普通Landau阶参数的拓扑缺陷,并在(4k + 3)d和(4k + 5)d时空(其中k为非负整数)中用玻色短程纠缠(BSRE)状态进行修饰,不需要任何对称性。这种方法不仅为这些BSPT状态提供了直观的物理图像,还使我们能够导出除组同调之外的所有这些BSPT状态的有效场论。

著录项

  • 来源
    《Physical review》 |2015年第18期|184404.1-184404.6|共6页
  • 作者

    Zhen Bi; Cenke Xu;

  • 作者单位

    Department of Physics, University of California, Santa Barbara, California 93106, USA;

    Department of Physics, University of California, Santa Barbara, California 93106, USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    quantum hall effects;

    机译:量子霍尔效应;

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