Abelian and non-Abelian statistics in the coherent state representation

Details Abelian and non-Abelian statistics in the coherent state representation Abelian and non-Abelian statistics in the coherent state representation

2011-08-12

arxiv.org/abs/1108.2734v2

Phys. Rev. X 1, 021015 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

38 pages, 11 figures, REVTeX 4-1; grammar and typo fixes, published version

Scientific paper

10.1103/PhysRevX.1.021015

We further develop an approach to identify the braiding statistics associated to a given fractional quantum Hall state through adiabatic transport of quasiparticles. This approach is based on the notion of adiabatic continuity between quantum Hall states on the torus and simple product states---or "patterns"---in the thin torus limit, together with a suitable coherent state Ansatz for localized quasiholes that respects the modular invariance of the torus. We give a refined and unified account of the application of this method to the Laughlin and Moore-Read states, which may serve as a pedagogical introduction to the nuts and bolts of this technique. Our main result is that the approach is also applicable---without further assumptions---to more complicated non-Abelian states. We demonstrate this in great detail for the level $k=3$ Read-Rezayi state at filling factor $\nu=3/2$. These results may serve as an independent check of other techniques, where the statistics are inferred from conformal block monodromies. Our approach has the benefit of giving rise to intuitive pictures representing the transformation of topological sectors during braiding, and allows for a self-consistent derivation of non-Abelian statistics without heavy mathematical machinery.

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