dorsal/arxiv
View SchemaNuclear Giant Resonances and Linear Response
| Authors | P. -G. Reinhard, Lu Guo, J. A. Maruhn |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0703044 |
| URL | https://arxiv.org/abs/nucl-th/0703044 |
| DOI | 10.1140/epja/i2007-10366-9 |
| Journal | Eur.Phys.J.A32:19-23,2007 |
Abstract
We search for nonlinear effects in nuclear giant resonances (GRs), in particular the isovector dipole and the isoscalar quadrupole modes. To that end, we employ a spectral analysis of time-dependent Hartree-Fock (TDHF) dynamics using Skyrme forces. Based on TDHF calculations over a wide range of excitation amplitudes, we explore the collectivity and degree of harmonic motion in these modes. Both GR modes turn out to be highly harmonic in heavy nuclei from A=100 on. There is no trace of a transition to irregular motion and multiple resonances are predicted. Slight anharmonicities are seen for light nuclei, particularly for $^{16}$O. These are mainly caused by the spin-orbit splitting.
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"abstract": "We search for nonlinear effects in nuclear giant resonances (GRs), in\nparticular the isovector dipole and the isoscalar quadrupole modes. To that\nend, we employ a spectral analysis of time-dependent Hartree-Fock (TDHF)\ndynamics using Skyrme forces. Based on TDHF calculations over a wide range of\nexcitation amplitudes, we explore the collectivity and degree of harmonic\nmotion in these modes. Both GR modes turn out to be highly harmonic in heavy\nnuclei from A=100 on. There is no trace of a transition to irregular motion and\nmultiple resonances are predicted. Slight anharmonicities are seen for light\nnuclei, particularly for $^{16}$O. These are mainly caused by the spin-orbit\nsplitting.",
"arxiv_id": "nucl-th/0703044",
"authors": [
"P. -G. Reinhard",
"Lu Guo",
"J. A. Maruhn"
],
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"doi": "10.1140/epja/i2007-10366-9",
"journal_ref": "Eur.Phys.J.A32:19-23,2007",
"title": "Nuclear Giant Resonances and Linear Response",
"url": "https://arxiv.org/abs/nucl-th/0703044"
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