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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
asked Dec 26, 2012 in Theoretical Physics by Hamurabi (25 points) [ no revision ]

1 Answer

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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.

This post imported from StackExchange Physics at 2014-04-05 17:35 (UCT), posted by SE-user Xiao-Gang Wen
answered Dec 29, 2012 by Xiao-Gang Wen (3,319 points) [ no revision ]

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