Progress of Theoretical Physics

Impurity State in the One-Dimensional Quantum Sine-Gordon System (g2=4 )

Hikaru Yamamoto

Published Jun 1, 1985• 4 citations

Abstract

Effects of impurity scattering in the one-dimensional quantum sine-Gordon system are investigated by the use of the fermion representation of boson fields. Treating the scattering of particles by an impurity we find that a single impurity gives rise to bound states in the energy gap of the corresponding fermion system.

DOI: 10.1143/ptp.73.1573

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