dorsal/arxiv
View SchemaRandom interactions in nuclei and extension of $0^+$ dominance in ground states to irreps of group symmetries
| Authors | V. K. B. Kota |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0401038 |
| URL | https://arxiv.org/abs/nucl-th/0401038 |
| Journal | High Energy Physics and Nucler Physics (Chinese) 28 (2004) 1307-1312 |
Abstract
Random one plus two-body hamiltonians invariant with respect to $O({\cal N}_1) \oplus O({\cal N}_2)$ symmetry in the group-subgroup chains $U({\cal N}) \supset U({\cal N}_1) \oplus U({\cal N}_2) \supset O({\cal N}_1) \oplus O({\cal N}_2)$ and $U({\cal N}) \supset O({\cal N}) \supset O({\cal N}_1) \oplus O({\cal N}_2)$ chains of a variety of interacting boson models are used to investigate the probability of occurrence of a given $(\omega_1 \omega_2)$ irreducible representation (irrep) to be the ground state in even-even nuclei; $[\omega_1]$ and $[\omega_2]$ are symmetric irreps of $O({\cal N}_1)$ and $O({\cal N}_2)$ respectively. Numerical results obtained for ${\cal N}_1 \geq 3, {\cal N}_2=1$ and ${\cal N}_1, {\cal N}_2 \geq 3$ situations are well explained by an extended Hartree-Bose mean-field analysis.
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"abstract": "Random one plus two-body hamiltonians invariant with respect to $O({\\cal\nN}_1) \\oplus O({\\cal N}_2)$ symmetry in the group-subgroup chains $U({\\cal N})\n\\supset U({\\cal N}_1) \\oplus U({\\cal N}_2) \\supset O({\\cal N}_1) \\oplus O({\\cal\nN}_2)$ and $U({\\cal N}) \\supset O({\\cal N}) \\supset O({\\cal N}_1) \\oplus\nO({\\cal N}_2)$ chains of a variety of interacting boson models are used to\ninvestigate the probability of occurrence of a given $(\\omega_1 \\omega_2)$\nirreducible representation (irrep) to be the ground state in even-even nuclei;\n$[\\omega_1]$ and $[\\omega_2]$ are symmetric irreps of $O({\\cal N}_1)$ and\n$O({\\cal N}_2)$ respectively. Numerical results obtained for ${\\cal N}_1 \\geq\n3, {\\cal N}_2=1$ and ${\\cal N}_1, {\\cal N}_2 \\geq 3$ situations are well\nexplained by an extended Hartree-Bose mean-field analysis.",
"arxiv_id": "nucl-th/0401038",
"authors": [
"V. K. B. Kota"
],
"categories": [
"nucl-th"
],
"journal_ref": "High Energy Physics and Nucler Physics (Chinese) 28 (2004)\n 1307-1312",
"title": "Random interactions in nuclei and extension of $0^+$ dominance in ground states to irreps of group symmetries",
"url": "https://arxiv.org/abs/nucl-th/0401038"
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