The Spin-two Quasiparticle of the Fractional Quantum Hall Effect
by
Amphithéâtre Léon Motchane
IHES
Fractional quantum Hall states are strongly interacting states of two-dimensional electrons moving in a high magnetic field. It has recently been found, theoretically and experimentally, that fractional quantum Hall fluids accommodate a quasiparticle excitations carrying spin equal to 2. I will describe the general theoretical arguments leading to this conclusion. I will also show that the existence of this spin-2 mode explains a strange feature of the numerical data on the spectrum of quantum Hall systems on a sphere.
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Slava Rychkov