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Effective field theory for a p-wave superconductor in the subgap regime
KTH, Centres, Nordic Institute for Theoretical Physics NORDITA.ORCID iD: 0000-0002-2068-1670
2015 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 91, no 7, 075116Article in journal (Refereed) Published
Abstract [en]

We construct an effective field theory for the 2d spinless p-wave paired superconductor that faithfully describes the topological properties of the bulk state, and also provides a model for the subgap states at vortex cores and edges. In particular, it captures the topologically protected zero modes and has the correct ground-state degeneracy on the torus. We also show that our effective field theory becomes a topological field theory in a well defined scaling limit and that the vortices have the expected non-Abelian braiding statistics.

Place, publisher, year, edition, pages
2015. Vol. 91, no 7, 075116
Keyword [en]
Quantum Hall States, Non-Abelian Statistics
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-163474DOI: 10.1103/PhysRevB.91.075116ISI: 000350252700001ScopusID: 2-s2.0-84923238229OAI: diva2:800726
Swedish Research Council

QC 20150407

Available from: 2015-04-07 Created: 2015-04-07 Last updated: 2015-04-07Bibliographically approved

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Sreejith, Ganesh Jaya
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