In-medium vector meson masses in a chiral SU(3) model
A significant drop of the vector meson masses in nuclear matter is observed in a chiral SU(3) model due to the e ects 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 e ects from the nucleon sector and is not observed in the mean field approximation.
| Author: | Detlef Zschiesche, Amruta Mishra, Stefan Schramm, Horst Stöcker, Walter Greiner |
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| URN: | urn:nbn:de:hebis:30-21044 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 14.11.2005 |
| Year of first Publication: | 2003 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Tag: | Dirac ; Hartree; baryon ; nuclear matter ; relativistic |
| Source: | Phys.Rev.C70:045202,2004. [nucl-th/0302073] |
| HeBIS PPN: | 188873430 |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
