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

Journal Article · Thu Feb 15 04:00:00 EST 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.75.024311· OSTI ID:20991012

Coraggio, L; Covello, A; Gargano, A; Itaco, N ^[1]; Entem, D R ^[2]; Kuo, T T. S. ^[3]; Machleidt, R ^[4]

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1. Dipartimento di Scienze Fisiche, Universita di Napoli Federico II, and Istituto Nazionale di Fisica Nucleare, Complesso Universitario di Monte S. Angelo, Via Cintia-I-80126 Napoli (Italy)
2. Grupo de Fisica Nuclear, IUFFyM, Universidad de Salamanca, E-37008 Salamanca (Spain)
3. Department of Physics, SUNY, Stony Brook, New York 11794 (United States)
4. Department of Physics, University of Idaho, Moscow, Idaho 83844 (United States)

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

• OSTI ID: 20991012
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 75; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
CHIRALITY
DEUTERONS
HAMILTONIANS
NUCLEON-NUCLEON INTERACTIONS
NUCLEON-NUCLEON POTENTIAL
NUCLEONS
OXYGEN ISOTOPES
PERTURBATION THEORY
S MATRIX
SHELL MODELS