Variational states for the spin-Peierls system
Statistical Mechanics
2009-10-30 v2
Abstract
We introduce a family of Jastrow pair product states for quasi one-dimensional spin systems. Depending on a parameter they interpolate between the resonating valence bond ground state of the Haldane-Shastry model describing a spin liquid and the (dimerized) valence bond solid ground states of the Majumdar-Ghosh spin chain. These states are found to form an excellent basis for variational studies of Heisenberg chains with next nearest neighbour interaction and bond alternation as realized in the spin-Peierls system CuGeO_3.
Keywords
Cite
@article{arxiv.cond-mat/9701200,
title = {Variational states for the spin-Peierls system},
author = {Holger Frahm and John Schliemann},
journal= {arXiv preprint arXiv:cond-mat/9701200},
year = {2009}
}
Comments
RevTeX+epsf macros, 24 pp. incl. figures, some references added