Transition to delta matter from hot, dense nuclear matter within a relativistic mean field formulation of the nonlinear sigma and omega model
An investigation of the transition to delta matter is performed based on a relativistic mean field formulation of the nonlinear sigma and omega model. We demonstrate that in addition to the Delta-meson coupling, the occurrence of the baryon resonance isomer also depends on the nucleon-meson coupling. Our results show that for the favored phenomenological value of m* and K, the Delta isomer exists at baryon density ~ 2–3 p0 if beta=1.31 is adopted. For universal coupling of the nucleon and Delta, the Delta density at baryon density ~ 2–3 p0 and temperature ~ 0.4–0.5 fm-1 is about normal nuclear matter density, which is in accord with a recent experimental finding.
| Author: | Zhuxia Li, Guangjun Mao, Yizhong Zhuo, Walter Greiner |
|---|---|
| URN: | urn:nbn:de:hebis:30-30176 |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 14.07.2006 |
| Year of first Publication: | 1997 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| Source: | Physical Review C 56(3), S. 1570-1575 (1997), ©1997 The American Physical Society, http://link.aps.org/abstract/PRC/v56/p1570 |
| HeBIS PPN: | 266048390 |
| Institutes: | Physik |
| Dewey Decimal Classification: | 530 Physik |
| PACS-Classification: | 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.) (for <i>N</i>-<i>N</i> interactions in nuclei, see 21.30.-x) |
| 24.10.Cn Many-body theory | |
| 25.75.Dw Particle and resonance production | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
