The two-pion exchange NN potential in nuclear matter and nuclear stability

✍ Scribed by R. Rapp; J.W. Durso; J. Wambach

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 785 KB
• Volume: 615
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(96)00482-4

✦ Synopsis

A meson exchange model of the ~rcr interaction which fits free 7rzr scattering data is used to calculate the interactions of pions in nuclear matter as a function of nuclear density. Polarization of the nuclear medium by the pions results in a marked increase in the s-wave ~-Tr attraction at low energy. The influence of this effect on the nucleon-nucleon interaction is a corresponding increase with density of the NN central potential due to the exchange of two correlated pions, resulting in an NN interaction which fails to saturate. A possible mechanism for restoring the theoretical stability of nuclear matter is explored and found to be effective. @ 1997 Elsevier Science B.V.