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Density matrix renormalization group algorithms with a single center site

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arxiv cond-mat/0508709 v1 pith:7JU3YHAF submitted 2005-08-29 cond-mat.str-el

Steven R. White This is my paper · ORCID
classification cond-mat.str-el
keywords correctiondensitymatrixcalculationscentergrouprenormalizationsingle
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We develop a correction to the density matrix used in density matrix renormalization group calculations to take into account the incompleteness of the environment block. The correction allows successful calculations using only a single site in the center of the system, rather than the standard two sites, improving typical computation times by a factor of two to four. In addition, in many cases where ordinary DMRG can get stuck in metastable configurations, the correction eliminates the sticking. We test the new method on the Heisenberg S=1 chain.

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Cited by 1 Pith paper

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  1. Wavelet Matrix Product States for Quantum Fields

    quant-ph 2026-06 unverdicted novelty 7.0 of 10

    Introduces wavelet matrix product states as a tensor network variational method for continuum quantum fields, allowing standard MPS algorithms and scale refinement, tested on Lieb-Liniger energy and correlations.

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