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arxiv cond-mat/0012241 v2 pith:ZMJ4BDWJ submitted 2000-12-13 cond-mat.mes-hall

Modelling Two-Roton Bound State Formation in Fractional Quantum Hall System

classification cond-mat.mes-hall
keywords boundstatetwo-rotoncompositeenergyfermionnumericalroton
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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