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Boundary effects on one-particle spectra of Luttinger liquids

K. Schoenhammer·V. Meden·W. Metzner·U. Schollwoeck·O. Gunnarsson
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Abstract

We calculate one-particle spectra for a variety of models of Luttinger liquids with open boundary conditions. For the repulsive Hubbard model the spectral weight close to the boundary is enhanced in a large energy range around the chemical potential. A power law suppression, previously predicted by bosonization, only occurs after a crossover at energies very close to the chemical potential. Our comparison with exact spectra shows that the effects of boundaries can partly be understood within the Hartree-Fock approximation.

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K. Schoenhammer, V. Meden, W. Metzner, U. Schollwoeck, O. Gunnarsson. 1999-12-22. Boundary effects on one-particle spectra of Luttinger liquids. https://doi.org/10.1103/physrevb.61.4393

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