Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-01-25
Phys.Rev.Lett. 89 (2002) 042502
Physics
Nuclear Physics
Nuclear Theory
4 pages, More realistic s.p. energies used than in the precedent version
Scientific paper
10.1103/PhysRevLett.89.042502
This work presents the first continuum shell-model study of weakly bound neutron-rich nuclei involving multiconfiguration mixing. For the single-particle basis, the complex-energy Berggren ensemble representing the bound single-particle states, narrow resonances, and the non-resonant continuum background is taken. Our shell-model Hamiltonian consists of a one-body finite potential and a zero-range residual two-body interaction. The systems with two valence neutrons are considered. The Gamow shell model, which is a straightforward extension of the traditional shell model, is shown to be an excellent tool for the microscopic description of weakly bound systems. It is demonstrated that the residual interaction coupling to the particle continuum is important; in some cases, it can give rise to the binding of a nucleus.
Bennaceur Karim
Michel Nathalie
Nazarewicz Witek
Ploszajczak Marek
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