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The Non-Abelian Density Matrix Renormalization Group Algorithm

McCulloch, I P; Gulacsi, Miklos


We describe here the extension of the density matrix renormalization group algorithm to the case where the Hamiltonian has a non-Abelian global symmetry group. The block states transform as irreducible representations of the non-Abelian group. Since the representations are multi-dimensional, a single block state in the new representation corresponds to multiple states of the original density matrix renormalization group basis. We demonstrate the usefulness of the construction via the...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Europhysics Letters
DOI: 10.1209/epl/i2002-00393-0


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