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On the origin of duality in the quantum Hall system

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arxiv 1008.5128 v2 pith:Y327YVIL submitted 2010-08-30 cond-mat.str-el

On the origin of duality in the quantum Hall system

classification cond-mat.str-el
keywords dualityactshallmodularoriginquantumactingcharacteristics
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We discuss the possible origin of the duality observed in the quantum Hall current-voltage characteristics. We clarify the difference between "particle-vortex" (complex modular) duality, which acts on the full transport tensor, and "charge-flux" ("real") duality, which acts directly on the filling factor. Comparison with experiment strongly favors the form of duality which descends from the modular symmetry group acting holomorphically on the compexified conductivity.

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