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Regensburg 2016 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 22: Transport: Topological Insulators - 3D
(Joint session of DS, HL, MA, O and TT, organized by TT)

DS 22.1: Hauptvortrag

Dienstag, 8. März 2016, 14:00–14:30, H18

Coupled-wire constructions: New insights into the physics of interacting topological systems in two and three dimension (and beyond) — •Tobias Meng1, Eran Sela2, Titus Neupert3, Martin Greiter4, Ronny Thomale4, Adolfo G. Grushin5, Jens H. Bardarson5, and Kirill Stengel61Institut für Theoretische Physik, Technische Universität Dresden, 01062 Dresden, Germany — 2Raymond and Beverly Sackler School of Physics and Astronomy, Tel-Aviv University, Tel Aviv 69978, Israel — 3Princeton Center for Theoretical Science, Princeton University, Princeton, New Jersey 08544, USA — 4Institute for Theoretical Physics, University of Würzburg, 97074 Würzburg, Germany — 5Max-Planck-Institut für Physik komplexer Systeme, 01187 Dresden, Germany. — 6Department of Physics & Astronomy, University of California, Riverside, California 92521, USA

Recently, it has been shown that coupled-wire constructions (CWCs) reproduce well-known fractional quantum Hall phases, and allow to derive new insights into, and setups for, interacting topological systems. I will review the basic concepts of 2D CWCs, discuss how they can teach us about spontaneous time-reversal symmetry breaking in topological insulators, and how they can be used to engineer chiral spin liquids in arrays of Mott-gapped quantum wires. I will show that 3D CWCs can for instance describe Weyl semimetals, and finally present new results on 4D fractional quantum Hall states built from coupled wires, whose 3D edges support a fractional chiral metal with a fractional chiral anomaly, thus generalizing the Weyl semimetal.

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