Consistent refinement of Bethe strings for spin and electron models and a new non-Bethe solution
Condensed Matter
2009-11-07 v2
Abstract
Well known Bethe strings in spin chains, delta-electron gas, Hubbard and t-J models are shown to be imprecise, while their consisten refinement along with a new non-Bethe r-string are discovered. Connection with the earlier results is established and the string hypothesis problem is discussed in the light of the present findings.
Keywords
Cite
@article{arxiv.cond-mat/0108175,
title = {Consistent refinement of Bethe strings for spin and electron models and a new non-Bethe solution},
author = {Anjan Kundu},
journal= {arXiv preprint arXiv:cond-mat/0108175},
year = {2009}
}
Comments
Latex 7 pages + 2 figs., version to be published in J. Phys. A