Energy weighted sums for collective excitations in nuclear Fermi-liquid
| dc.creator | Kolomietz, V. M. | |
| dc.creator | Lukyanov, S. V. | |
| dc.creator | Khudenko, O. O. | |
| dc.date | 2007-06-05 | |
| dc.date.accessioned | 2026-07-07T10:17:33Z | |
| dc.date.available | 2026-07-07T10:17:33Z | |
| dc.description | Model independent, $m_1$, adiabatic, $m_{-1}$, and high-energy, $m_3$, energy weighted sums for the isoscalar and isovector nuclear excitations are investigated within the framework of the kinetic theory adopted to the description of a two-component nuclear Fermi-liquid. For both the adiabatic and scaling approaches, the connection of the EWS $m_{-1}$ and $m_3$ to the nuclear stiffness coefficients and the first- and zero-sound velocity is established. We study the enhancement factor $κ_{I}$ in the energy weighted sum $m'_1$ for the isovector excitations and provide the reasonable explanation of the experimental exceeding of the 100% exhaustion of sum $m'_1$ for the isovector giant dipole resonances. We show the dependence of the enhancement factor $κ_{I}$ on the nuclear mass number $A$ and analyse its dependence on the Landau's isovector amplitude $F'_1$. | |
| dc.description | 25 pages, 5 figures. accepted for publication in Ukr. Phys. J | |
| dc.identifier | https://arxiv.org/abs/0706.0670 | |
| dc.identifier | http://arxiv.org/abs/0706.0670 | |
| dc.identifier | Ukr. Journ. Phys. V.52 N6. 546 (2007) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/173891 | |
| dc.subject | Nuclear Theory | |
| dc.title | Energy weighted sums for collective excitations in nuclear Fermi-liquid | |
| dc.type | text |