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The Modular and Renormalisation Groups in the Quantum Hall Effect by Dolan, Brian P. is a scholarly article available to read on EtoBox.

What is The Modular and Renormalisation Groups in the Quantum Hall Effect about?

An analytic form for the crossover of the conductivity tensor between two Hall plateaux, as a function of the external magnetic field, is proposed. The form of the crossover is obtained from the action of a symmetry group, a particular subgroup of the modular group, on the upper-half complex conductivity plane, by assuming that the beta-function describing the crossover is a holomorphic function of the conductivity. The group action also leads to a selection rule, |p_1q_2-p_2q_1|=1, for allowed transitions between Hall plateaux with filling factors p_1/q_1 and p_2/q_2, where q_1 and q_2 are odd.

Author

Dolan, Brian P.

Published

1998

Language

EN