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

Autori
Roth, Robert ; Papakonstantinou, Panagiota ; Paar, Nils ; Hergert, Heiko ; Neff, Thomas ; Feldmeier, Hans

Izvornik
Physical Review C (0556-2813) 73 (2006);

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
nucleon-nucleon interaction; short-range correlations; Hartree-Fock; binding energies

Sažetak
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 $\VO_{; ; \UCOM}; ; $ resulting from the Argonne V18 potential, bound nuclei are obtained already 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 \elem{; ; He}; ; {; ; 4}; ; to \elem{; ; Pb}; ; {; ; 208}; ; , 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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