Year: 1999
Type: article
Abstract: We show that the assumption of dropping meson masses together with conventional many-body effects, implemented in the relativistic Dirac-Brueckner formalism, explains nuclear saturation. We use a microscopic model for correlated $2\ensuremath{\pi}$ exchange and include the standard many-body effects on the in-medium pion propagation, which initially increase the attractive nucleon-nucleon ( $\mathrm{NN}$) potential with density. For the vector meson exchanges in both the $\ensuremath{\pi}\ensuremath{\pi}$ and $\mathrm{NN}$ sector, we assume Brown-Rho scaling which---in concert with ``chiral'' $\ensuremath{\pi}\ensuremath{\pi}$ contact interactions---reduces the attraction at higher densities.
Source: Physical Review Letters
Authors: R. Rapp, R. Machleidt, J. W. Durso, G. E. Brown
Institutions: Stony Brook University, University of Idaho, Mount Holyoke College
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: U.S. Department of Energy
OpenAlex ID: W2007450039