dorsal/arxiv
View SchemaMomentum and Energy Distributions of Nucleons in Finite Nuclei due to Short-Range Correlations
| Authors | H. Müther, A. Polls, W. H. Dickhoff |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9411005 |
| URL | https://arxiv.org/abs/nucl-th/9411005 |
| DOI | 10.1103/PhysRevC.51.3040 |
Abstract
The influence of short-range correlations on the momentum and energy distribution of nucleons in nuclei is evaluated assuming a realistic meson-exchange potential for the nucleon-nucleon interaction. Using the Green-function approach the calculations are performed directly for the finite nucleus $^{16}$O avoiding the local density approximation and its reference to studies of infinite nuclear matter. The nucleon-nucleon correlations induced by the short-range and tensor components of the interaction yield an enhancement of the momentum distribution at high momenta as compared to the Hartree-Fock description. These high-momentum components should be observed mainly in nucleon knockout reactions like $(e,e'p)$ leaving the final nucleus in a state of high excitation energy. Our analysis also demonstrates that non-negligible contributions to the momentum distribution should be found in partial waves which are unoccupied in the simple shell-model. The treatment of correlations beyond the Brueckner-Hartree-Fock approximation also yields an improvement for the calculated ground-state properties.
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"abstract": "The influence of short-range correlations on the momentum and energy\ndistribution of nucleons in nuclei is evaluated assuming a realistic\nmeson-exchange potential for the nucleon-nucleon interaction. Using the\nGreen-function approach the calculations are performed directly for the finite\nnucleus $^{16}$O avoiding the local density approximation and its reference to\nstudies of infinite nuclear matter. The nucleon-nucleon correlations induced by\nthe short-range and tensor components of the interaction yield an enhancement\nof the momentum distribution at high momenta as compared to the Hartree-Fock\ndescription. These high-momentum components should be observed mainly in\nnucleon knockout reactions like $(e,e\u0027p)$ leaving the final nucleus in a state\nof high excitation energy. Our analysis also demonstrates that non-negligible\ncontributions to the momentum distribution should be found in partial waves\nwhich are unoccupied in the simple shell-model. The treatment of correlations\nbeyond the Brueckner-Hartree-Fock approximation also yields an improvement for\nthe calculated ground-state properties.",
"arxiv_id": "nucl-th/9411005",
"authors": [
"H. M\u00fcther",
"A. Polls",
"W. H. Dickhoff"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.51.3040",
"title": "Momentum and Energy Distributions of Nucleons in Finite Nuclei due to Short-Range Correlations",
"url": "https://arxiv.org/abs/nucl-th/9411005"
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