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Critical comparison of classical field theory and microscopic wave functions for skyrmions in quantum Hall ferromagnets

Critical comparison of classical field theory and microscopic wave functions for skyrmions in quantum Hall ferromagnets

We report on a study of the classical field theory description of charged skyrmions in quantum Hall ferromagnets. The appropriate field theory is a non-linear $\sigma$ model generalized to include Coulomb and Zeeman interaction terms. We have tested the range of validity of the classical field theory by comparing with …