Consequences of the center-of-mass correction in nuclear mean-field models

Details Consequences of the center-of-mass correction in nuclear mean-field models Consequences of the center-of-mass correction in nuclear mean-field models

1999-10-08

arxiv.org/abs/nucl-th/9910025v1

Eur.Phys.J.A7:467-478,2000

Physics

Nuclear Physics

Nuclear Theory

12 pages LATeX, needs EPJ style files, 5 eps figures, accepted for publication in Eur. Phys. J. A

Scientific paper

10.1007/s100500050419

We study the influence of the scheme for the correction for spurious center-of-mass motion on the fit of effective interactions for self-consistent nuclear mean-field calculations. We find that interactions with very simple center-of-mass correction have significantly larger surface coefficients than interactions for which the center-of-mass correction was calculated for the actual many-body state during the fit. The reason for that is that the effective interaction has to counteract the wrong trends with nucleon number of all simplified schemes for center-of-mass correction which puts a wrong trend with mass number into the effective interaction itself. The effect becomes clearly visible when looking at the deformation energy of largely deformed systems, e.g. superdeformed states or fission barriers of heavy nuclei.

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