A consistent approximation scheme beyond RPA for bosons
Nuclear Theory
2009-11-07 v2 Condensed Matter
Abstract
In this paper, we develop a consistent extension of RPA for bosonic systems. In order to illustrate the method, we consider the case of the anharmonic oscillator. We compare our results with those obtained in mean-field and standard RPA approaches, with the exact ones and show that they are very close to the exact ones.
Cite
@article{arxiv.nucl-th/0206031,
title = {A consistent approximation scheme beyond RPA for bosons},
author = {D. Davesne and M. Oertel and H. Hansen},
journal= {arXiv preprint arXiv:nucl-th/0206031},
year = {2009}
}
Comments
19 pages, Latex, 1 figure, accepted version in EPJA