2 papers
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…
cond-mat1998
Identification of excitons in conjugated polymers: a density matrix renormalisation group study
M. Boman, R. J. Bursill
This work addresses the question of whether low-lying excitations in conjugated polymers are comprised of free charge-carriers or excitons. States are characterised as bound or unb…