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

报告摘要: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.