Transfer Matrix DMRG for Thermodynamics of One-Dimensional Quantum Systems

Details Transfer Matrix DMRG for Thermodynamics of One-Dimensional Quantum Systems Transfer Matrix DMRG for Thermodynamics of One-Dimensional Quantum Systems

1997-05-29

arxiv.org/abs/cond-mat/9705301v1

Physics

Condensed Matter

4 pages, 3 figures; all ps-files

Scientific paper

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.

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