Joint Theoretical High Energy, Condensed Matter and Discovery Seminar – University of Copenhagen

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Discovery Center > Discovery calendar > Calendar 2012 > Joint Theoretical High...

Joint Theoretical High Energy, Condensed Matter and Discovery Seminar

Speaker: Hans Hansson

Title: Topological Field Theory for p-wave Superconductors

Abstract: In this talk I will first give a short background to topological field theories for superconductors and then present resent results on a proposed a topological field theory for a spinless 2D chiral superconductor that contains fundamental Majorana fields. Due to a fermionic gauge symmetry, the Majorana modes survive as dynamical degrees of freedom only at magnetic vortex cores, and on edges. These modes have the topological properties pertinent to a p-wave superconductor including the non-abelian braiding statistics. I also briefly discuss the connection to the Moore-Read Pfaffian quantum Hall state, and extensions to the spin-ful case and to 3D topological superconductors.