Single hole spectral function and spin-charge separation in the t-J model
Condensed Matter
2016-08-31 v1
Abstract
Worm algorithm quantum Monte Carlo simulations of the hole Green function with subsequent spectral analysis were performed for J/t 0.1, 0.2, 0.4 on lattices with up to LxL=32x32 sites at temperatures as low as T=J/40, and present, apparently, the hole spectral function in the thermodynamic limit. Spectral analysis reveals a delta-function-sharp quasiparticle peak at the lower edge of the spectrum which is incompatible with the power-law singularity and thus rules out the possibility of spin-charge separation in this parameter range. Spectral continuum features two peaks separated by a gap ~4t.
Cite
@article{arxiv.cond-mat/0103234,
title = {Single hole spectral function and spin-charge separation in the t-J model},
author = {A. Mishchenko and N. V. Prokof'ev and B. V. Svistunov},
journal= {arXiv preprint arXiv:cond-mat/0103234},
year = {2016}
}
Comments
4 pages, latex, 6 figures