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Title: Field Theory and Wave Function of Symmetry Protected Topological Phases
Originating Office: IAS
Speaker: Xu, Cenke
Issue Date: 18-Dec-2012
Event Date: 18-Dec-2012
Group/Series/Folder: Record Group 8.15 - Institute for Advanced Study
Series 3 - Audio-visual Materials
Location: 8.15:3 box 1.8
Notes: IAS Symposium on Frontiers in Condensed Matter Physics. Talk no. 7
Title from title slide.
Abstract: The talk start with a general discussion of the field theory of symmetry protected topological phases, including the ground state wave function, entanglement spectrum that can be derived from the field theory. The speaker also discuss the general applicability of the field theory. Then, discuss two classes of symmetry protected topological phases. The first class is the SPT phases in arbitrary odd spatial dimensions with PSU(N) symmetry, the second class is the SPT phases in even spatial dimensions with PSU(N) x TR symmetry. In both cases, discuss their field theory descriptions, and their lattice construction. The topological part of the field theory can be precisely derived/reproduced from the lattice construction. Also argue that the boundary of the SPT phases cannot be realized as a lower dimensional system with the same symmetry as the bulk SPT.
Duration: 34 min.
Appears in Series:8.15:3 - Audio-visual Materials
Videos for Public -- Distinguished Lectures