A simple way to avoid metastable configurations in the density-matrix renormalization-group algorithms
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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| Main Author: | |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Física
2009
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332009000500016 |
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