Impurity corrections to the thermodynamics in spin chains using a transfer-matrix DMRG method
Strongly Correlated Electrons
2009-10-31 v1
Abstract
We use the density matrix renormalization group (DMRG) for transfer matrices to numerically calculate impurity corrections to thermodynamic properties. The method is applied to two impurity models in the spin-1/2 chain, namely a weak link in the chain and an external impurity spin. The numerical analysis confirms the field theory calculations and gives new results for the crossover behavior.
Cite
@article{arxiv.cond-mat/9812001,
title = {Impurity corrections to the thermodynamics in spin chains using a transfer-matrix DMRG method},
author = {Stefan Rommer and Sebastian Eggert},
journal= {arXiv preprint arXiv:cond-mat/9812001},
year = {2009}
}
Comments
9 pages in revtex format including 5 embedded figures (using epsf). To appear in PRB. The latest version in PDF format can be found at http://fy.chalmers.se/~eggert/papers/DMRGimp.pdf