Abstract
Monte Carlo results for the frequency dependent conductivity , the angular resolved photoemission spectral weight , and the electron momentum distribution are calculated for a half-filled Hubbard model with the on-site Coulomb interaction equal to the bandwidth . We find that even for , a spin-density-wave approximation provides a sensible description of this data and hence a useful picture of the electronic degrees of freedom in the insulating state.
- Received 4 March 1994
DOI:https://doi.org/10.1103/PhysRevLett.73.748
©1994 American Physical Society