Effects of the continuum coupling on spin-orbit splitting
Abstract.Recently, the shell model in the complex k-plane (the so-called Gamow Shell Model) has been formulated using a complex Berggren ensemble representing bound single-particle states, single-particle resonances, and non-resonant continuum states. The single-particle basis used is that of the Hartree-Fock potential generated self-consistently by a finite-range residual interaction. In this framework, we shall discuss the “spin-orbit splitting” of the 3/21- and 1/21- states in 7He. It is demonstrated that the continuum effects are very important and cannot be taken into account in standard shell-model calculations.