2 papers
cond-mat.str-el2000
Phase diagram of the extended Hubbard chain with charge-dipole interactions
M. E. Torio, A. A. Aligia, K. Hallberg +1
We consider a modified extended Hubbard model (EHM) which, in addition to the on-site repulsion U and nearest-neighbor repulsion V, includes polarization effects in second-order pe…
cond-mat1995
Hole dynamics in generalized spin backgrounds in infinite dimensions
K. A. Hallberg, E. Mueller-Hartmann, C. A. Balseiro
We calculate the dynamical behaviour of a hole in various spin backgrounds in infinite dimensions, where it can be determined exactly. We consider hypercubic lattices with two diff…