Modelling Two-Roton Bound State Formation in Fractional Quantum Hall System
classification
❄️ cond-mat.mes-hall
keywords
boundstatetwo-rotoncompositeenergyfermionnumericalroton
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Composite Fermion approach using extensive and parallalized numerical analysis has recently established a two-roton bound state as the lowest energy long wavelength neutral excitation of FQHE for finite particle (N~30) system. By focussing on the "oriented dipole" character of magneto roton, we model the two roton problem and solve it variationally (analytically) to find a two-roton bound state with binding energy which is in good agreement with the composite fermion numerical results.
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