dorsal/arxiv
View SchemaCompression modes in nuclei: microscopic models with Skyrme interactions
| Authors | G. Colo`, N. Van Giai, P. F. Bortignon, M. R. Quaglia |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9904051 |
| URL | https://arxiv.org/abs/nucl-th/9904051 |
Abstract
The isoscalar giant monopole resonances (ISGMR) and giant dipole resonances (ISGDR) in medium-heavy nuclei are investigated in the framework of HF+RPA and HF-BCS+QRPA with Skyrme effective interactions. It is found that pairing has little effect on these modes. It is also found that the coupling of the RPA states to 2p-2h configurations results in about (or less than) 1 MeV shifts of the resonance energies and at the same time gives the correct total widths. For the ISGMR, comparison with recent data leads to a value of nuclear matter compression modulus close to 215 MeV. However, a discrepancy between calculated and measured energies of the ISGDR in $^{208}$Pb is found and remains an open problem.
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"date_created": "2026-03-02T18:00:25.149000Z",
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"abstract": "The isoscalar giant monopole resonances (ISGMR) and giant dipole resonances\n(ISGDR) in medium-heavy nuclei are investigated in the framework of HF+RPA and\nHF-BCS+QRPA with Skyrme effective interactions. It is found that pairing has\nlittle effect on these modes. It is also found that the coupling of the RPA\nstates to 2p-2h configurations results in about (or less than) 1 MeV shifts of\nthe resonance energies and at the same time gives the correct total widths. For\nthe ISGMR, comparison with recent data leads to a value of nuclear matter\ncompression modulus close to 215 MeV. However, a discrepancy between calculated\nand measured energies of the ISGDR in $^{208}$Pb is found and remains an open\nproblem.",
"arxiv_id": "nucl-th/9904051",
"authors": [
"G. Colo`",
"N. Van Giai",
"P. F. Bortignon",
"M. R. Quaglia"
],
"categories": [
"nucl-th"
],
"title": "Compression modes in nuclei: microscopic models with Skyrme interactions",
"url": "https://arxiv.org/abs/nucl-th/9904051"
},
"schema_id": "dorsal/arxiv",
"source": {
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"type": "Model",
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