Recent progress in the truncated Lanczos method : application to hole-doped spin ladders
Strongly Correlated Electrons
2009-10-31 v3
Abstract
The truncated Lanczos method using a variational scheme based on Hilbert space reduction as well as a local basis change is re-examined. The energy is extrapolated as a power law function of the Hamiltonian variance. This systematic extrapolation procedure is tested quantitatively on the two-leg t-J ladder with two holes. For this purpose, we have carried out calculations of the spin gap and of the pair dispersion up to size 2x15.
Keywords
Cite
@article{arxiv.cond-mat/0010072,
title = {Recent progress in the truncated Lanczos method : application to hole-doped spin ladders},
author = {O. Chiappa and S. Capponi and D. Poilblanc},
journal= {arXiv preprint arXiv:cond-mat/0010072},
year = {2009}
}
Comments
5 pages, 4 included eps figures, submitted to Phys. Rev. B; revised version