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Heisenberg, J.; Mihaila, Bogdan

doi:10.1103/physrevc.59.1440

Cited by 85 publications

(180 citation statements)

References 13 publications

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“…The CCM found its place in quantum chemistry [10,11] as a tool of the first-principle calculation. The method was reintroduced around 2000 in the description of atomic nuclei [6,12]. Because there are specific difficulties in a description and a treatment of the shortrange part of a nucleon-nucleon interaction, applications of the CCM to nuclei require deeper understanding of an * kohno@kyu-dent.ac.jp effective interaction theory.…”

Section: Introductionmentioning

confidence: 99%

4He energies and radii calculated by the coupled-cluster method with a many-body average potential

Kohno

Okamoto

2012

Phys. Rev. C

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The reformulated coupled-cluster method (CCM), in which average many-body potentials are introduced, provides a useful framework to organize numerous terms appearing in CCM equations, which enables us to clarify the structure of the CCM theory and physical importance of various terms more easily. We explicitly apply this framework to 4 He, retaining one-body and two-body correlations as the first illustrating attempt. Numerical results with using two modern nucleonnucleon interactions (AV18 and CD-Bonn) and their low-momentum interactions are presented. The characters of short-range and many-body correlations are discussed. Although not considered explicitly, the expression of the ground-state energy in the presence of a three-nucleon force is given.

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Section: Introductionmentioning

confidence: 99%

4He energies and radii calculated by the coupled-cluster method with a many-body average potential

Kohno

Okamoto

2012

Phys. Rev. C

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“…In the last years, no-core shell model calculations [6,7] have used microscopic interactions to calculate some property of nuclei up to 12 C . The coupled cluster method has been used to evaluate 16 O properties [8,9,10]. More recently a technique called Unitary Correlation Operator Method has been developed to produce effective interactions used in mean-field and shell model calculations, and it has been applied with success to a variety of nuclei up to 208 Pb [11,12].…”

Section: Introductionmentioning

confidence: 99%

Ground states of medium-heavy doubly-closed-shell nuclei in correlated-basis function theory

Bisconti

Saavedra²,

Có³

et al. 2006

Phys. Rev. C

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The correlated basis function theory is applied to the study of medium-heavy doubly closed shell nuclei with different wave functions for protons and neutrons and in the jj coupling scheme. State dependent correlations including tensor correlations are used. Realistic two-body interactions of Argonne and Urbana type, together with three-body interactions have been used to calculate ground state energies and density distributions of the 12 C , 16 O , 40 Ca , 48 Ca and 208 Pb nuclei.

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“…Here, coupled-cluster theory is an ideal compromise between accuracy on the one hand and computational cost on the other. This method has been applied to various problems in nuclear structure [2,3,[12][13][14][15][16][17].…”

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confidence: 99%

Toward open-shell nuclei with coupled-cluster theory

et al. 2011

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We develop a new method based on equation-of-motion coupled-cluster theory to describe properties of open-shell nuclei with A ± 2 nucleons outside a closed shell. We perform proof-of-principle calculations for the ground states of the helium isotopes 3−6 He and the first excited 2 + state in 6 He. The comparison with exact results from matrix diagonalization in small model spaces demonstrates the accuracy of the coupled-cluster methods. Three-particle-one-hole excitations of 4 He play an important role for the accurate description of 6 He. For the open-shell nucleus 6 He, the computational cost of the method is comparable with the coupled-cluster singles-and-doubles approximation while its accuracy is similar to coupled-cluster with singles, doubles and triples excitations.

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Ground state correlations and mean field in16O

Abstract: This document 1 gives a detailed account of the terms used in the computation of the ground state mean field and the ground state correlations. While the general approach to this description is given in a separate paper (nucl-th/9802029) we give here the explicite expressions used.

Cited by 85 publications

References 13 publications

4He energies and radii calculated by the coupled-cluster method with a many-body average potential

4He energies and radii calculated by the coupled-cluster method with a many-body average potential

Ground states of medium-heavy doubly-closed-shell nuclei in correlated-basis function theory

Toward open-shell nuclei with coupled-cluster theory

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