Point-like topological defects in bilayer quantum Hall systems

Details Point-like topological defects in bilayer quantum Hall systems Point-like topological defects in bilayer quantum Hall systems

2005-07-12

arxiv.org/abs/hep-th/0507110v3

J.Stat.Mech.0605:L05002,2006

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, 3 figures

Scientific paper

10.1088/1742-5468/2006/05/L05002

Following a suggestion given in Phys. Lett. B 571 (2003) 250, we show how a bilayer Quantum Hall system at fillings nu =m/pm+2 can exhibit a point-like topological defect in its edge state structure. Indeed our CFT theory for such a system, the Twisted Model (TM), gives rise in a natural way to such a feature in the twisted sector. Our results are in agreement with recent experimental findings (cond-mat/0503478) which evidence the presence of a topological defect in the bilayer system.

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