Point-like topological defects in bilayer quantum Hall systems

Abstract

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.

9 pages, 3 figures

References in corpus (4)

• Spin Transition in Strongly Correlated Bilayer Two Dimensional Electron Systems
• Topological order in Josephson junction ladders with Mobius boundary conditions
• Topological defects in the edge state structure in a bilayer electron system
• Jain states on a torus: an unifying description

Cited by in corpus (4)

• Fully frustrated Josephson junction ladders with Mobius boundary conditions as topologically protected qubits
• Twisted Conformal Field Theories and Morita equivalence
• Topologically protected qubits as minimal Josephson junction arrays with non trivial boundary conditions: a proposal
• Paired quantum Hall states on noncommutative two-tori