Low density instability in a nuclear Fermi liquid drop

Physics – Nuclear Physics – Nuclear Theory

Scientific paper

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12 pages, latex, 3 ps-figures, submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.60.044612

The instability of a Fermi-liquid drop with respect to bulk density distortions is considered. It is shown that the presence of the surface strongly reduces the growth rate of the bulk instability of the finite Fermi-liquid drop because of the anomalous dispersion term in the dispersion relation. The instability growth rate is reduced due to the Fermi surface distortions and the relaxation processes. The dependence of the bulk instability on the multipolarity of the particle density fluctuations is demonstrated for two nuclei $^{40}Ca$ and $^{208}Pb$.

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