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A two-dimensional algorithm of the density matrix renormalization group | | Tao Xiang
; Jizhong Lou
; Zhaobin Su
; | | Date: |
12 Feb 2001 | | Journal: | Physical Review B 64, 104414 (2001). | | Subject: | Strongly Correlated Electrons; Statistical Mechanics | cond-mat.str-el cond-mat.stat-mech | | Abstract: | We propose a new approach to implement the density matrix renormalization group (DMRG) in two dimensions. With this approach the initial blocks of a L by L lattice are built up directly from the matrix elements of a (L-1) by L-1) lattice and the topological characteristics of two dimensional lattices is preserved in the iteration of DMRG. By applying it to the spin-1/2 Heisenberg model on both square and triangle lattices, we find that this approach is significantly more efficient and accurate than other two-dimensional DMRG methods currently in use. | | Source: | arXiv, cond-mat/0102200 | | Services: | Forum | Review | PDF | Favorites | |
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