Entanglement perturbation theory for the elementary excitation in one dimension
Strongly Correlated Electrons
2015-05-19 v1
Abstract
The entanglement perturbation theory is developed to calculate the excitation spectrum in one dimension. Applied to the spin- antiferromagnetic Heisenberg model, it reproduces the des Cloiseaux-Pearson Bethe ansatz result. As for spin-1, the spin-triplet magnon spectrum has been determined for the first time for the entire Brillouin zone, including the Haldane gap at .
Keywords
Cite
@article{arxiv.1008.0346,
title = {Entanglement perturbation theory for the elementary excitation in one dimension},
author = {Sung Gong Chung and Lihua Wang},
journal= {arXiv preprint arXiv:1008.0346},
year = {2015}
}