Bosonization on the lattice: the emergence of the higher harmonics
Jaime Ferrer, J. González, M. -A. Martín-Delgado
Abstract
A general and transparent procedure to bosonize fermions placed on a lattice is presented. Harmonics higher than kF are shown to appear in the one-paticle Green function, due to the compact character of real electron bands. Quantitative estimations of the role of these higher harmonics are made possible by the bosonization technique presented here.
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