Friday, May 30, 2014

Is there a method for differentiating fractional quantum Hall states aside from finding Chern numbers?


The ground state for a quantum Hall system on a torus with fractional filling factor can be classified by the Chern number, which is why the Hall conductance is quantized. Is there another method or classification one can use to distinguish states?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

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