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 ZschiescheGND, Amruta Mishra, Stefan SchrammGND, Horst StöckerORCiDGND, Walter GreinerGND |
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URN: | urn:nbn:de:hebis:30-21044 |
Document Type: | Preprint |
Language: | English |
Date of Publication (online): | 2005/11/14 |
Year of first Publication: | 2003 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2005/11/14 |
Tag: | Dirac; Hartree; baryon; nuclear matter; relativistic |
Source: | Phys.Rev.C70:045202,2004. [nucl-th/0302073] |
HeBIS-PPN: | 188873430 |
Institutes: | Physik / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Licence (German): | Deutsches Urheberrecht |