ℤ2 Green's function topology of Majorana wires
Publikation: Beitrag in Fachzeitschrift › Forschungsartikel › Beigetragen › Begutachtung
Beitragende
Abstract
We represent the ℤ2 topological invariant characterizing a one-dimensional topological superconductor using a WessZuminoWitten dimensional extension. The invariant is formulated in terms of the single-particle Greens function which allows us to classify interacting systems. Employing a recently proposed generalized Berry curvature method, the topological invariant is represented independent of the extra dimension requiring only the single-particle Greens function at zero frequency of the interacting system. Furthermore, a modified twisted boundary conditions approach is used to rigorously define the topological invariant for disordered interacting systems.
Details
Originalsprache | Englisch |
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Aufsatznummer | 065006 |
Fachzeitschrift | New journal of physics |
Jahrgang | 15 |
Publikationsstatus | Veröffentlicht - 4 Juni 2013 |
Peer-Review-Status | Ja |
Extern publiziert | Ja |