Braiding statistics and symmetry-protected topological phases

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Braiding statistics and symmetry-protected topological phases

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Michael, Levin

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2015-05

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Symmetry-protected topological (SPT) phases can be thought of as generalizations of topological insulators. Just as topological insulators have robust boundary modes protected by time reversal and charge conservation symmetry, SPT phases have boundary modes protected by more general symmetries. In this talk, I will describe a method for analyzing 2D and 3D SPTphases using braiding statistics. More specifically, I will show that 2D and 3D SPT phases can be characterized by gauging their symmetries and studying the braiding statistics of their gauge flux excitations. The 3D case is of particular interest as it involves a generalization of quasiparticle braiding statistics to three dimensions.

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Symmetries and Interactions in Topological Matter 2015

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Michael, Levin. (2015). Braiding statistics and symmetry-protected topological phases. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/172314.

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