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Symmetry Protected Topological Phases: Prediction, Construction, and Classification

Event Details

Event Dates: 

Thursday, September 26, 2013 - 12:00pm

Seminar Location: 

  • Duane Physics Room D142

Speaker Name(s): 

Xie Chen

Speaker Affiliation(s): 

UC Berkeley
Seminar Type/Subject

Scientific Seminar Type: 

  • Condensed Matter Seminar

Event Details & Abstract: 

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.