arXiv:nucl-th/0206031·v2·Nuclear Theory
A consistent approximation scheme beyond RPA for bosons
D. Davesne🇫🇷 · M. Oertel🇫🇷 · H. Hansen (Institut de Physique Nucleaire de Lyon, France)🇫🇷
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.
Comments: 19 pages, Latex, 1 figure, accepted version in EPJA