Premium
From sum rules to RPA: 2. 3 He droplets
Author(s) -
Weisgerber S.,
Reinhard P.G.
Publication year - 1993
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19935050707
Subject(s) - range (aeronautics) , excitation , physics , limit (mathematics) , hierarchy , energy (signal processing) , zero (linguistics) , spectral line , shell (structure) , statistical physics , open shell , quantum mechanics , mathematics , mathematical analysis , materials science , linguistics , philosophy , economics , market economy , composite material
Abstract We investigate the excitation spectra of closed‐shell 3 He droplets using a flexible formulation of the RPA which has been presented in preceeding papers. The calculations are based on an energy functional which thorougly employs finite‐range interactions. We compare the results for different stages in a hierarchy of approximations to the full RPA. We furthermore discuss the consequences of taking the zero‐range limit of the present energy functional, i.e. of using Skyrme‐type interactions.