A simple way to avoid metastable configurations in the density-matrix renormalization-group algorithms
AUTOR(ES)
Xavier, J. C.
FONTE
Brazilian Journal of Physics
DATA DE PUBLICAÇÃO
2009-09
RESUMO
We use the spin-1 Heisenberg chain with periodic boundary conditions to ilustrate that the systems get stuck in metastable configurations only when the density-matrix renormalization-group algorithm start with small number of states m. We also show that the convergence of the energies have a huge improvement if we start the algorithm with a large number of states m.
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