432 citations · 572 across the 4 of their papers we have counts for
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cond-mat1996★ 432 cited
A class of ansatz wave functions for 1D spin systems and their relation to DMRG
Stefan Rommer, Stellan Ostlund
We investigate the density matrix renormalization group (DMRG) discovered by White and show that in the case where the renormalization eventually converges to a fixed point the DMR…
cond-mat1994★ 20 cited
Symmetries and Mean-Field Phases of the Extended Hubbard Model
A. B. Eriksson, T. Einarsson, S. Ostlund
The two-dimensional extended Hubbard model that includes a nearest- neighbor Heisenberg interaction is studied using a mean-field theory where quasiparticles are defined by an U(8)…