Pseudogap and photoemission spectra in the attractive Hubbard model
  Angle-resolved photoemission spectra are calculated microscopically for the two-dimensional attractive Hubbard model. A system of self-consistent T-matrix equations are solved numerically in the real-time domain. The single-particle spectral function has a two-peak structure resulting from the presense of bound states. The spectral function is suppressed at the chemical potential, leading to a pseudogap-like behavior. At high temperatures and densities the pseudogap diminishes and finally disappears; these findings are similar to experimental observations for the cuprates. 
P. E. Kornilovitch (1) and Bumsoo Kyung (2) ((1) Imperial College   London, (2) MPIPKS Dresden)