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cond-mat.str-el2002★ 1 cited
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…
cond-mat.str-el2001★ 2 cited
Fictitious fluxes in doped antiferromagnets
Stellan Ostlund, Martin Andersson
In a tight binding model of charged spin-1/2 electrons on a square lattice, a fully polarized ferromagnetic spin configuration generates an apparent U(1) flux given by times t…
cond-mat.str-el1998
Density Matrix Renormalization Group of Gapless Systems
Martin Andersson, Magnus Boman, Stellan Ostlund
We investigate convergence of the density matrix renormalization group (DMRG) in the thermodynamic limit for gapless systems. Although the DMRG correlations always decay exponentia…