Critical Properties in Dynamical Charge Correlation Function for the One-Dimensional Mott Insulator

Details Critical Properties in Dynamical Charge Correlation Function for the One-Dimensional Mott Insulator Critical Properties in Dynamical Charge Correlation Function for the One-Dimensional Mott Insulator

1999-07-12

arxiv.org/abs/cond-mat/9907164v1

Physics

Condensed Matter

7 pages, REVTeX

Scientific paper

10.1143/JPSJ.68.2331

Critical properties in the dynamical charge correlation function for the one-dimensional Mott insulator are studied. By properly taking into account {\it the final-state interaction} between the charge and spin degrees of freedom, we find that the edge singularity in the charge correlation function is governed by massless spinon excitations, although it is naively expected that spinons do not directly contribute to the charge excitation over the Hubbard gap. We obtain the momentum-dependent anomalous critical exponent by applying the finite-size scaling analysis to the Bethe ansatz solution of the half-filled Hubbard model.

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