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http://hdl.handle.net/2445/10995
Title: | Delta(1232) isobar excitations and the ground state of nuclei |
Author: | Frick, Tobias Kaiser, Steffen Müther, Herbert Polls Martí, Artur Entem, D. R. Machleidt, R. |
Keywords: | Estructura nuclear Excitació nuclear Nuclear structure Nuclear excitation |
Issue Date: | 2002 |
Publisher: | The American Physical Society |
Abstract: | The influence of Delta isobar components on the ground-state properties of nuclear systems is investigated for nuclear matter as well as finite nuclei. Many-body wave functions, including isobar configurations and binding energies, are evaluated employing the framework of the coupled-cluster theory. It is demonstrated that the effect of isobar configurations depends in a rather sensitive way on the model used for the baryon-baryon interaction. As examples for realistic baryon-baryon interactions with explicit inclusion of isobar channels we use the local (V28) and nonlocal meson-exchange potentials (Bonn2000) but also a model recently developed by the Salamanca group, which is based on a quark picture. The differences obtained for the nuclear observables are related to the treatment of the interaction, the pi-exchange contributions in particular, at high momentum transfers. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevC.65.034316 |
It is part of: | Physical Review C, 2002, vol. 65, núm. 3, p. 034316-1-034316-7 |
URI: | http://hdl.handle.net/2445/10995 |
Related resource: | http://dx.doi.org/10.1103/PhysRevC.65.034316 |
ISSN: | 0556-2813 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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