In-medium vector meson masses in a Chiral SU(3) model

Details In-medium vector meson masses in a Chiral SU(3) model In-medium vector meson masses in a Chiral SU(3) model

2003-02-24

arxiv.org/abs/nucl-th/0302073v2

Phys.Rev. C70 (2004) 045202

Physics

Nuclear Physics

Nuclear Theory

26 pages including 10 figures; the text has been modified for clarity

Scientific paper

10.1103/PhysRevC.70.045202

A significant drop of the vector meson masses in nuclear matter is observed in a chiral SU(3) model due to the effects of the baryon Dirac sea. This is taken into account through the summation of baryonic tadpole diagrams in the relativistic Hartree approximation. The appreciable decrease of the in-medium vector meson masses is due to the vacuum polarisation effects from the nucleon sector and is not observed in the mean field approximation.

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