Issue |
EPJ Web of Conferences
Volume 66, 2014
INPC 2013 – International Nuclear Physics Conference
|
|
---|---|---|
Article Number | 02067 | |
Number of page(s) | 4 | |
Section | Nuclear Structure | |
DOI | https://doi.org/10.1051/epjconf/20146602067 | |
Published online | 20 March 2014 |
https://doi.org/10.1051/epjconf/20146602067
Nuclear Tensor Force and Effective Pions in the Relativistic Hartree-Fock Formalism
1 University of Cantabria, E-39005 Santander, Spain
2 St. Petersburg University for Telecommunications, 191065 St. Petersburg, Russia
a e-mail: marcoss@unican.es
Published online: 20 March 2014
In the framework of nonlinear nuclear models based on the relativistic Hartree-Fock approximation, we have isolated the contribution of the tensor force of pions in the effective NN interaction, by means of two different approximate methods, recently developed by us, in order to dilucidate its role in a variety of nuclear properties. Results show that a reduction of the contribution of this tensor force considerably influences the spin-orbit splittings and magic gaps in the spin-unsaturated midweight 56Ni nucleus as well as the behaviour of the total binding energies with A in heavy nuclei. Both methods give similar results. We also study the evolution of the splitting of the proton 1d spin-orbit doublet in the chain Z=14, from N=20 to N=28, and the neutron 2p − 1f shell in the chain N=28, from the 48Ca nucleus to the 42Si nucleus. Whereas, in the first case, the pion tensor force (PTF) plays an important role and its reduction is needed to reproduce the corresponding experimental results; in the second case, the quenching of the neutron 2p3/2 − 1f7/2 gap in the mentioned isotonic chain N=28 is hardly affected by the PTF.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.