839 articles – 5678 Notices  [english version]
HAL : in2p3-00167765, version 1

Fiche détaillée  Récupérer au format
International Journal of Modern Physics E 12 (2003) 543-554
Relativistic mean-field approximation with density-dependent screening meson masses in nuclear matter
B.-X. Sun1, X.-F. Lu, P.-N. Shen, E.-G. Zhao
(2003)

The Debye screening masses of the sigma, omega and neutral rho mesons and the photon are calculated in the relativistic mean-field approximation. As the density of the nucleon increases, all the screening masses of mesons increase. A different result with Brown-Rho scaling is shown, which implies a reduction in the mass of all the mesons in the nuclear matter, except the pion. Replacing the masses of the mesons with their corresponding screening masses in the Walecka-1 model, five saturation properties of the nuclear matter are fixed reasonably, and then a density-dependent relativistic mean-field model is proposed without introducing the nonlinear self-coupling terms of mesons.
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
Physique/Physique Nucléaire Théorique
Debye screening mass – nuclear matter – relativistic mean-field approximation