CMSA Quantum Matter/Quantum Field Theory Seminar: Boundary States for Fermions: SPT Phases, RG Flows, and a Whole Bunch of Related Things


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May 20, 2020 10:30 am - 12:00 pm
via Zoom Video Conferencing

David Tong - University of Cambridge

I'll describe boundary conditions for fermions in d=1+1 dimensions, using the framework of boundary conformal field theory. I'll explain how boundary states are classified by a mod 2 index, related to their SPT phase, describe how one can follow RG flows from one boundary state to another, and give a novel perspective on the Z_8 classification of d=2+1 SPT phases.

via Zoom Video Conferencing: