Scalar-vector Lagrangian without nonlinear self-interactions of bosonic fields in the relativistic mean-field theory

Details Scalar-vector Lagrangian without nonlinear self-interactions of bosonic fields in the relativistic mean-field theory Scalar-vector Lagrangian without nonlinear self-interactions of bosonic fields in the relativistic mean-field theory

2008-05-05

arxiv.org/abs/0805.0558v2

Phys.Lett.B666:140-144,2008

Physics

Nuclear Physics

Nuclear Theory

A few statements corrected and updated. To be published in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2008.07.005

A new Lagrangian model without nonlinear scalar self-interactions in the relativistic mean-field (RMF) theory is proposed. Introducing terms for scalar-vector interactions (SVI), we have developed a RMF Lagrangian model for finite nuclei and nuclear matter. It is shown that by inclusion of SVI in the basic RMF Lagrangian, the nonlinear sigma^3 and sigma^4 terms can be dispensed with. The SVI Lagrangian thus obtained provides a good description of ground-state properties of nuclei along the stability line as well as far away from it. This Lagrangian model is also able to describe experimental data on the breathing-mode giant monopole resonance energies well.

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