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- W1985938862 abstract "Electrons in two dimensions in a high magnetic field can condense into an incompressible quantum fluid state when the electron density is equal to certain rational fractions of the flux density. Much progress has been made in understanding the nature of this state based on the ansatz wavefunction of Laughlin. Here, we show that the incompressible nature of the quantum fluid can be derived from a semiclassical evaluation of the imaginary time propagator. The dominant classical paths consist of cooperative ring exchange events. When these condense, they mediate a logarithmic interaction between density fluctuations, and produce a precise fractional quantization condition for the quasi-particle charges. We further show that the essential long wavelength properties of Laughlin's ground state and quasi-particle wavefunctions can be derived constructively from this approach. We conclude with some speculations concerning the nature of the off-diagonal order in the quantum Hall liquid." @default.
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- W1985938862 date "1987-01-01" @default.
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- W1985938862 title "Generalized Cooperative Ring Exchange Theory of the Fractional Quantum Hall Effect" @default.
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- W1985938862 doi "https://doi.org/10.1088/0031-8949/1987/t19a/011" @default.
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