432 citations · 572 across the 4 of their papers we have counts for
4 papers
Staggered flux and stripes in doped antiferromagnets
Martin Andersson, Stellan Ostlund
We have numerically investigated whether or not a mean-field theory of spin textures generate fictitious flux in the doped two dimensional -model. First we consider the proper…
Conformations of Linear DNA
Boris Fain, Joseph Rudnick, Stellan Ostlund
We examine the conformations of a model for under- and overwound DNA. The molecule is represented as a cylindrically symmetric elastic string subjected to a stretching force and to…
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…
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)…