Bibcode
Mornas, L.; Gallego, E.; Perez, A.
Bibliographical reference
eprint arXiv:nucl-th/9806093
Advertised on:
6
1998
Citations
3
Refereed citations
2
Description
We obtain the RPA summed one-meson exchange potential between nucleons
in symmetric nuclear matter at zero temperature, from a model which
includes $
ho $, $sigma $, $omega $ and $pi $ mesons. The behavior
of rho mesons inside the medium is first discussed using different
schemes to extract a finite contribution from the vacuum polarization.
These schemes give qualitatively different results for the in-medium rho
mass. The results are discussed in connection with the
non-renormalizability of the model. We next study the modified potential
as density increases. In the intermediate distance range, it is
qualitatively modified by matter and vacuum effects. In the
long-distance range ($r>2$ fm), one observes the presence of
oscillations, which are not present in free-space. Features on this
distance range are insensitive to the renormalization scheme.