Hartree-Fock and many body perturbation theory with correlated realistic NN interactions

Journal Article · Sat Apr 15 04:00:00 EDT 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.044312· OSTI ID:20771438

Roth, R; Papakonstantinou, P; Paar, N; Hergert, H; Neff, T; Feldmeier, H ^[1]

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1. Institut fuer Kernphysik, Technische Universitaet Darmstadt, D-64289 Darmstadt (Germany)

We employ correlated realistic nucleon-nucleon interactions for the description of nuclear ground states throughout the nuclear chart within the Hartree-Fock approximation. The crucial short-range central and tensor correlations, which are induced by the realistic interaction and cannot be described by the Hartree-Fock many-body state itself, are included explicitly by a state-independent unitary transformation in the framework of the unitary correlation operator method (UCOM). Using the correlated realistic interaction V{sub UCOM} resulting from the Argonne V18 potential, bound nuclei are already obtained on the Hartree-Fock level. However, the binding energies are smaller than the experimental values because long-range correlations have not been accounted for. Their inclusion by means of many-body perturbation theory leads to a remarkable agreement with experimental binding energies over the whole mass range from {sup 4}He to {sup 208}Pb, even far off the valley of stability. The observed perturbative character of the residual long-range correlations and the apparently small net effect of three-body forces provides promising perspectives for a unified nuclear structure description.

• OSTI ID: 20771438
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BINDING ENERGY
CORRELATIONS
GROUND STATES
HARTREE-FOCK METHOD
HELIUM 4
LEAD 208
MASS
NUCLEAR FORCES
NUCLEAR STRUCTURE
NUCLEON-NUCLEON INTERACTIONS
PERTURBATION THEORY
POTENTIALS
STABILITY
TENSORS
THREE-BODY PROBLEM
TRANSFORMATIONS