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Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 59: Low-Dimensional Systems: 2D - Theory (organized by TT)

TT 59.1: Vortrag

Mittwoch, 2. April 2014, 09:30–09:45, BEY 81

Critical theory of the spin quantum Hall transition — •Roberto Bondesan — Institute of theoretical physics, Köln, Deutschland

The spin quantum Hall (SQH) transition is a 2+1 dimensional Anderson transition between topological phases distinguished by different integer values of the spin conductance. In contrast to the celebrated integer quantum Hall transition, in the SQH case, critical exponents governing low moments of observables are known exactly. In this talk I will address the problem of characterizing completely the exponents of the theory beyond low moments. For this puropouse I will explain recent insights on the classification of scaling fields at Anderson transitions, which allow to perform efficient numerical studies and conjecture the multifractal spectrum of the theory.

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