# Measurement of topological spin

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How do you measure the topological spin of an anyon? So how could an experimental setup look like? Is topological spin an observable at all?

This post imported from StackExchange Physics at 2014-04-05 17:35 (UCT), posted by SE-user Hamurabi
The topological spin $h$ of an anyon (a quasi-hole in a FQH state) is the exponent in the Green function of the quasi-hole along the edge of the FQH state [see eq.(61) in my review paper http://arxiv.org/abs/1203.3268 ], which can be measured by the I-V curve: $I\propto V^{4h-1}$ in the tunnelling experiments between FQH edges.
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