Marshall sign and the doped $t-J$ model
Condensed Matter
2007-05-23 v1
Abstract
Marshall sign as a sole source of sign problem hidden in an antiferromagnet is explored under doping. By tracking the Marshall sign, a zero spectral weight is revealed in the doped antiferromagnetic system. is caused by a phase string induced by the ``bare'' hole. By eliminating such a phase string through nonlocal transformations, a non-perturbative scheme is obtained. It is argued that this formalism provides a unique way to get access to the real ground state of the doped model for both one- and two-dimensions.
Keywords
Cite
@article{arxiv.cond-mat/9506070,
title = {Marshall sign and the doped $t-J$ model},
author = {Z. Y. Weng and D. N. Sheng and Y. C. Chen},
journal= {arXiv preprint arXiv:cond-mat/9506070},
year = {2007}
}
Comments
11 pages, RevTex, no figures