59 citations · 75 across the 3 of their papers we have counts for
3 papers
cond-mat.str-el2005★ 9 cited
Perturbation theory for optical excitations in the one-dimensional extended Peierls--Hubbard model
Anja Grage, Florian Gebhard, Joerg Rissler
For the one-dimensional, extended Peierls--Hubbard model we calculate analytically the ground-state energy and the single-particle gap to second order in the Coulomb interaction fo…
cond-mat.str-el2004★ 7 cited
Optical excitations of Peierls-Mott insulators with bond disorder
J. Rissler, E. Jeckelmann, F. Gebhard
The density-matrix renormalization group (DMRG) is employed to calculate optical properties of the half-filled Hubbard model with nearest-neighbor interactions. In order to model t…
cond-mat2001★ 59 cited
Excited States of Ladder-type Poly-p-phenylene Oligomers
Joerg Rissler, Florian Gebhard, Peter Schwerdtfeger +1
Ground state properties and excited states of ladder-type paraphenylene oligomers are calculated applying semiempirical methods for up to eleven phenylene rings. The results are in…