Two-Roton Bound State in the Fractional Quantum Hall Effect
classification
❄️ cond-mat.mes-hall
keywords
boundeffectfractionalhallquantumstatetwo-rotonbeen
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The true nature of the lowest-energy, long-wavelength neutral excitation of the fractional quantum Hall effect has been a long outstanding problem. In this Letter, we establish that it is a two-roton bound state.
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