1109.4866 (Roberto Bondesan et al.)

Exact exponents for the spin quantum Hall transition in the presence of
multiple edge channels    [PDF]

Roberto Bondesan, Ilya A. Gruzberg, Jesper Lykke Jacobsen, Hideaki Obuse, Hubert Saleur

Critical properties of quantum Hall systems are affected by the presence of extra edge channels - present, in particular, at higher plateau transitions. We study this phenomenon for the case of the spin quantum Hall transition. Using supersymmetry we map the corresponding network model to a classical loop model, whose boundary critical behavior was recently determined exactly. We verify predictions of the exact solution by extensive numerical simulations.

View original: http://arxiv.org/abs/1109.4866