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 occu
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.
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Metadaten
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):2006/07/14
Year of first Publication:1997
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2006/07/14
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):License Logo Veröffentlichungsvertrag für Publikationen

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