Speaker
Mrs
Noemi Zabari
(Institute of Nuclear Physics, Polish Academy of Sciences )
Description
An extension of the standard RMF theory by including interaction between sigma and delta mesons is proposed. The first-order and second-order interaction between those mesons is calculated separately. It is shown that in both cases that the symmetry energy Esym can be diminished to some extent in the specific range of baryon density. However, for the second-order interaction Esym can take even negative values for low enough coupling constant. Current work includes implementing those results into TOV equation. The neutron stars with a mass in the range 1.8- 2.3 M☉ were obtained.
