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Transfer Matrix DMRG for Thermodynamics of One-Dimensional Quantum Systems | | Xiaoqun Wang
; Tao Xiang
; | | Date: |
29 May 1997 | | Subject: | cond-mat | | Affiliation: | Institut Romand de Recherche Numérique en Physique des Materiaux, Lausanne, Switzerland) and Tao Xiang (Interdisciplinary Research Centre in Superconductivity, The University of Cambridge, United Kindom | | Abstract: | The transfer matrix DMRG method for one dimensional quantum lattice systems has been developed by considering the symmetry property of the transfer matrix and introducing the asymmetric reduced density matrix. We have evaluated a number of thermodynamic quantities of the anisotropic spin-1/2 Heisenberg model using this method and found that the results agree very accurately with the exact ones. The relative errors for the spin susceptibility are less than $10^{-3}$ down to $T=0.01J$ with 80 states kept. | | Source: | arXiv, cond-mat/9705301 | | Services: | Forum | Review | PDF | Favorites | |
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