Knock-on type exchange and the density dependence of an effective interaction
Nuclei
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Abstract
We investigate the origin of the density-dependence of the strength of an effective interaction previously derived from a Brueckner-Hartree-Fock calculation of the optical-model potential in nuclear matter. From the analysis of a model based on the Hartree-Fock approximation and on a Yukawa interaction with a Majorana exchange component, we study to what extent this dependence derives from the momentum-dependence of the exchange contribution of the knock-on type. The model is also used to discuss zero-range pseudopotential methods for including this knock-on contribution.
Keywords
Elementary Particle Nuclear Matter Density Dependence Exchange Component Effective Interaction
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