Low-momentum nucleon-nucleon interactions and shell-model calculations

摘要: In the last few years, low-momentum nucleon-nucleon (NN) interaction V{sub low-k} derived from free-space NN potentials has been successfully used in shell-model calculations. is a smooth potential which preserves deuteron binding energy as well half-on-shell T matrix of original up to momentum cutoff {lambda}. this paper, we test new chiral perturbation theory at next-to-next-to-next-to-leading order with sharp 2.1 fm{sup -1}. Shell-model calculations for oxygen isotopes using effective Hamiltonians both types are performed. We find that two show same perturbative behavior and yield very similar results.