Truncation scheme of time-dependent density-matrix approach III
Nuclear Theory
2019-06-26 v1
Abstract
The time-dependent density-matrix theory (TDDM) where the Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy for reduced density matrices is truncated by approximating a three-body density matrix with one-body and two-body density matrices is applied to the Lipkin model. It is shown that in the large limit the ground state in TDDM approaches the exact solution. Various truncation schemes for the three-body density matrix are also tested for an extended three-level Lipkin model.
Cite
@article{arxiv.1904.06780,
title = {Truncation scheme of time-dependent density-matrix approach III},
author = {Mitsuru Tohyama and Peter Schuck},
journal= {arXiv preprint arXiv:1904.06780},
year = {2019}
}
Comments
11 pages, 17 figures