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- W2897743348 abstract "We first derive the Rayleigh-Schrodinger many-body perturbation theory up to third order (RSPT3) for Hamiltonians with three-body interaction. The structure of closed-shell nuclei in a wide mass range from 4He to 48Ca has been investigated by the RSPT3 with explicit NN+3N Hamiltonian. The RSPT3 calculations are performed within Hartree-Fock bases. The perturbative contribution of antisymmetrized Goldstone diagrams (diagrammatic expansion for RSPT) with normal-ordered interaction has been analyzed. We demonstrate that the normal-ordered two-body level (NO2B) approximation which neglects the residual three-body term can catch the main effect of full three-body force in RSPT calculation. We also present rigorous benchmarks for RSPT3 with non-perturbative coupled cluster and in-medium similarity renormalization group using the same chiral NNLOsat NO2B interaction. The three methods are in good agreement with each other for binding energies and radii. However, the RSPT3 provides an alternative that is computationally inexpensive but comparable in accuracy to state-of-the-art non-perturbative many-body methods." @default.
- W2897743348 created "2018-10-26" @default.
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- W2897743348 date "2018-10-20" @default.
- W2897743348 modified "2023-09-27" @default.
- W2897743348 title "Ab initio Rayleigh-Schrodinger perturbation calculation including three-body force" @default.
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- W2897743348 hasPublicationYear "2018" @default.
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