dorsal/arxiv
View SchemaTensor Forces and the Ground-State Structure of Nuclei
| Authors | R. Schiavilla, R. B. Wiringa, Steven C. Pieper, J. Carlson |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0611037 |
| URL | https://arxiv.org/abs/nucl-th/0611037 |
| DOI | 10.1103/PhysRevLett.98.132501 |
| Journal | Phys.Rev.Lett.98:132501,2007 |
Abstract
Two-nucleon momentum distributions are calculated for the ground states of nuclei with mass number $A\leq 8$, using variational Monte Carlo wave functions derived from a realistic Hamiltonian with two- and three-nucleon potentials. The momentum distribution of $np$ pairs is found to be much larger than that of $pp$ pairs for values of the relative momentum in the range (300--600) MeV/c and vanishing total momentum. This order of magnitude difference is seen in all nuclei considered and has a universal character originating from the tensor components present in any realistic nucleon-nucleon potential. The correlations induced by the tensor force strongly influence the structure of $np$ pairs, which are predominantly in deuteron-like states, while they are ineffective for $pp$ pairs, which are mostly in $^1$S$_0$ states. These features should be easily observable in two-nucleon knock-out processes, such as $A(e,e^\prime np)$ and $A(e,e^\prime pp)$.
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"abstract": "Two-nucleon momentum distributions are calculated for the ground states of\nnuclei with mass number $A\\leq 8$, using variational Monte Carlo wave functions\nderived from a realistic Hamiltonian with two- and three-nucleon potentials.\nThe momentum distribution of $np$ pairs is found to be much larger than that of\n$pp$ pairs for values of the relative momentum in the range (300--600) MeV/c\nand vanishing total momentum. This order of magnitude difference is seen in all\nnuclei considered and has a universal character originating from the tensor\ncomponents present in any realistic nucleon-nucleon potential. The correlations\ninduced by the tensor force strongly influence the structure of $np$ pairs,\nwhich are predominantly in deuteron-like states, while they are ineffective for\n$pp$ pairs, which are mostly in $^1$S$_0$ states. These features should be\neasily observable in two-nucleon knock-out processes, such as $A(e,e^\\prime\nnp)$ and $A(e,e^\\prime pp)$.",
"arxiv_id": "nucl-th/0611037",
"authors": [
"R. Schiavilla",
"R. B. Wiringa",
"Steven C. Pieper",
"J. Carlson"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevLett.98.132501",
"journal_ref": "Phys.Rev.Lett.98:132501,2007",
"title": "Tensor Forces and the Ground-State Structure of Nuclei",
"url": "https://arxiv.org/abs/nucl-th/0611037"
},
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