HAL : in2p3-00167765, version 1

DOI : 10.1142/S0218301303001363

Fiche détaillée

Récupérer au format BibTeX - EndNote - TEI - RefWorks -

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

Thème(s)

:

Physique/Physique Nucléaire Théorique

Mot(s)-clé(s) : Debye screening mass – nuclear matter – relativistic mean-field approximation

in2p3-00167765, version 1

http://hal.in2p3.fr/in2p3-00167765

oai:hal.in2p3.fr:in2p3-00167765

Contributeur : Emmanuelle Vernay <>

Soumis le : Mercredi 22 Août 2007, 16:33:27

Dernière modification le : Jeudi 23 Août 2007, 09:40:44