X-ray edge singularity in integrable lattice models of correlated electrons

@inproceedings{Essler1997XrayES,
  title={X-ray edge singularity in integrable lattice models of correlated electrons},
  author={Fabian H L Essler and Holger Frahm},
  year={1997}
}
  • Fabian H L Essler, Holger Frahm
  • Published 1997
  • Physics
  • We study the singularities in x-ray absorption spectra of one-dimensional Hubbard and t-J models. We use boundary conformal field theory and the Bethe ansatz solutions of these models with both periodic and open boundary conditions to calculate the exponents describing the power-law decay near the edges of x-ray absorption spectra in the case where the core-hole potential has bound states. {copyright} {ital 1997} {ital The American Physical Society} 

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