Tensor force effect on the structure evolution in Si isotopes

The tensor force effect on the nuclear structure properties for Si isotopes is studied within the self-consistent Hartree-Fock-Bogoliubov approach. The Skyrme energy density functional has been considered in the particle-hole channel, while the zero range delta-interaction has been employed in the particle-particle channel. In order to correctly treat the pairing correlation, particle-number projection was carried out by the Lipkin-Nogami method. Rotational correction as approximate angular momentum projection is also introduced in order to restore the rotational symmetry. The bulk properties like binding energy, two-neutron separation energy and charge radius are thus investigated with and without tensor force and compared with recent experimental data. To study the tensor effect on the shape evolution, the potential energy curves are displayed and discussed. (author)