In-medium chiral effective Lagrangian description of nuclear matter and Walecka-type mean-field models
Department of Physics, Nankai University -
Tianjin 300071, PRC
Accepted: 8 October 2002
With the help of the pion medium effects, we investigate the finite-density nuclear system based on the non-linear chiral Lagrangian at leading order. At the mean-field level, an effective Lagrangian is constructed without including the usual scalar-isoscalar meson phenomenologically. It is shown that the chiral Lagrangian description of bulk nuclear matter is compatible with that from the Walecka-type mean-field models.
PACS: 12.39.Fe – Chiral Lagrangians / 21.65.+f – Nuclear matter
© EDP Sciences, 2003