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    Duality and the modular group in the quantum Hall effect

    Dolan, Brian P. (1999) Duality and the modular group in the quantum Hall effect. Journal of Physics A: Mathematical and General, 32 (21). L243-L248. ISSN 0305-4470

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    We explore the consequences of introducing a complex conductivity into the quantum Hall effect. This leads naturally to an action of the modular group on the upper-half complex conductivity plane. Assuming that the action of a certain subgroup, compatible with the law of corresponding states, commutes with the renormalization group flow, we derive many properties of both the integer and fractional quantum Hall effects including: universality; the selection rule |p1q2-p2q1| = 1 for transitions between quantum Hall states characterized by filling factors nu1 = p1/q1 and nu2 = p2/q2; critical values of the conductivity tensor; and Farey sequences of transitions. Extra assumptions about the form of the renormalization group flow lead to the semicircle rule for transitions between Hall plateaux.

    Item Type: Article
    Keywords: Duality; modular group; quantum Hall effect; complex conductivity;
    Academic Unit: Faculty of Science and Engineering > Mathematical Physics
    Item ID: 10486
    Identification Number:
    Depositing User: Dr. Brian Dolan
    Date Deposited: 14 Feb 2019 16:49
    Journal or Publication Title: Journal of Physics A: Mathematical and General
    Publisher: Institute of Physics
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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