Spectral properties of Luther-Emery systems

Details Spectral properties of Luther-Emery systems Spectral properties of Luther-Emery systems

1996-02-15

arxiv.org/abs/cond-mat/9602087v1

Physics

Condensed Matter

REVTEX

Scientific paper

We calculate the spectral function of the Luther-Emery model which describes one-dimensional fermions with gapless charge and gapped spin degrees of freedom. We find a true singularity with interaction dependent exponents on the gapped spin dispersion and a finite maximum depending on the magnitude of the spin gap, on a shifted charge dispersion. We apply these results to photoemission experiments on charge density wave systems and discuss the spectral properties of a one-dimensional Mott insulator.

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