2013年12月9日（周一）上午10:00，物理系seminar：

報告題目： Symmetry Protected Topological Phases: Prediction, Construction, and Classification 報告人： Xie Chen Miller Institute for Basic Research in Science, UC Berkeley, USA 報告時間： 2013-12-9 10:00 報告地點：理科樓三樓報告廳摘要： Topological insulators, with their gapless edge states around a gapped insulating bulk, have attracted a great deal of theoretical and experimental efforts recently. While their topological nature is usually attributed to fermions filling a topological band structure, , I will show in this talk that similar phases exist in interacting boson / spin systems as well. This talk is going to give a general introduction to such Symmetry Protected Topological (SPT) Phases, which include nontrivial bosonic topological insulators and superconductors in one, two and three spatial dimensions. In particular, I am going to focus on the exotic edge physics such SPT phases can have, spin / boson models where they are realized, and the classification of SPT phases with group cohomology.