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- <TITLE>Heinz, Muether, Mavromatis: Abstract</TITLE>
-
- <H2>Collective Excitations and Ground State Correlations</H2>
- <P>
- E.Heinz, H.Müther, H.A.Mavromatis
- <P>
- A generalized RPA formalism is presented which treats pp and ph correlations
- on an equal footing. The effect of these correlations on the
- single-particle Green function is discussed and it is demonstrated that a
- self-consistent treatment of the single-particle Green function is
- required to obtain stable solutions. A simple approximation scheme is
- presented which incorporates for this self-consistency requirement
- and conserves the number of particles. Results of numerical calculations
- are given for O16 using a G-matrix interaction derived from a realistic
- One-Boson-Exchange potential.
- <P>
- 16 pages + 2 figures
- <P>
- e-mail: heinz@mailserv.zdv.uni-tuebingen.de
-