Anyonic States in Chern-Simons Theory

Details Anyonic States in Chern-Simons Theory Anyonic States in Chern-Simons Theory

1992-09-24

arxiv.org/abs/hep-th/9209098v1

Physics

High Energy Physics

High Energy Physics - Theory

14pp

Scientific paper

We discuss the canonical quantization of Chern-Simons theory in $2+1$ dimensions, minimally coupled to a Dirac spinor field. Gauss's law and the gauge condition, $A_0 = 0$, are implemented by embedding the formulation in an appropriate physical subspace. We find two kinds of charged particle states in this model. One kind has a rotational anomaly in the form of arbitrary phases that develop in $2\pi$ rotations; the other kind rotates ``normally''---i.e., charged states only change sign in $2\pi$ rotations. The rotational anomaly has nothing to do with the implementation of Gauss's law. It is possible to inadvertently produce these anomalous states in the process of implementing Gauss's law, but it is also possible to implement Gauss's law without producing rotational anomalies. Moreover, states with or without rotational anomalies obey ordinary Fermi statistics.

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