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- W2055491137 abstract "The explicit treatment of intrinsic excitation degrees of freedom of the nucleon in the many-body problem is formulated in the exp( S ) theory. We derive the generalized Brueckner-Hartree-Fock (one-particle equation) and generalized Bethe-Goldstone equations for the extended system in which the nucleon-resonance excitations are treated explicitly. A fully self-consistent solution of the complete coupled channel problem for the excitation of Δ and ΔΔ resonances is achieved in the case of nuclear matter ( J ≦ 2). The energy of the system is calculated for seven Fermi momenta in the range of k F = 0.96 fm −1 to 1.56 fm −1 . The wave functions of the NΔ and ΔΔ partial waves are discussed in comparison with the NN correlation functions. The percentage of Δ contribution increases rapidly with the Fermi momentum (4.2% at k F = 0.96 fm −1 to 16% at k F = 1.56 fm −1 ). The defect parameter K is much larger in the general case (NN, DΔ, ΔΔ) than in the conventional treatment (only nucleonic degrees of freedom) indicating that higher order correlations are much more important in such a treatment of the many-body problem." @default.
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- W2055491137 date "1978-12-01" @default.
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- W2055491137 title "Resonances in nuclei — A fully self-consistent solution of the coupled channel equations for nuclear matter (Δ, ΔΔ)" @default.
- W2055491137 doi "https://doi.org/10.1016/0375-9474(78)90603-6" @default.
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