Symmetry breaking and the random-phase approximation in small quantum dots
Mesoscale and Nanoscale Physics
2009-02-06 v2 Strongly Correlated Electrons
Nuclear Theory
Abstract
The random-phase approximation has been used to compute the properties of parabolic two-dimensional quantum dots beyond the mean-field approximation. Special emphasis is put on the ground state correlation energy, the symmetry restoration and the role of the spurious modes within the random-phase approximation. A systematics with the Coulombic interaction strength is presented for the 2-electron dot, while for the 6- and 12-electron dots selected cases are discussed. The validity of the random-phase approximation is assessed by comparison with available exact results.
Cite
@article{arxiv.cond-mat/0304246,
title = {Symmetry breaking and the random-phase approximation in small quantum dots},
author = {Llorens Serra and Rashid G. Nazmitdinov and A. Puente},
journal= {arXiv preprint arXiv:cond-mat/0304246},
year = {2009}
}
Comments
9 pages, 4 embedded + 6 gif Figs. Published version