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第四届清华信息前沿交叉论坛
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报告题目:
Wallpaper group symmetry protected topological phases in (2+1)D interacting fermionic system
 报告人:
张健豪
清华大学高等研究院
报告时间:
2019-06-27 10:30
报告地点:
物理系理科楼C302
主办单位:
物理系
  简介:

The classification symmetry protected topological (SPT) phases with on-site symmetry in the interacting fermionic systems with arbitrary dimensions are well established by a generalized group super-cohomology theory, but the space group counterpart's classification is still in a puzzle. In this talk, I will introduce the classification of interacting fermionic SPT phases with wallpaper group symmetries in (2+1)-dimensional system. Furthermore, with the obtained classification data, we discuss the recently proposed correspondence principle between crystalline topological phases and those with internal symmetries through the explicit lower-dimensional block-state decoration.

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