Extended Skyrme interaction and spin fluctuations in dense matter - INSPIRE

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Extended Skyrme interaction and spin fluctuations in dense matter

Jerome Margueron
(
- Orsay, IPN
)
,
Hiroyuki Sagawa
(
- Aizu U.
)

May, 2009

6 pages

Published in:

J.Phys.G 36 (2009) 125102

e-Print:

0905.1931 [nucl-th]

DOI:

10.1088/0954-3899/36/12/125102

View in:

reference search22 citations

Citations per year

Abstract: (arXiv)

Most of the Skyrme interactions are known to predict spin or isospin instabilities beyond the saturation density of nuclear matter which contradict predictions based on realistic interactions. A modification of the standard Skyrme interaction is proposed so that the ferromagnetic instability is removed. The new terms are density dependent and modify only the spin p-h interaction in the case of spin-saturated system. Consequences for the nuclear response function and neutrino mean free path are shown. The overall effect of the RPA correlations makes dense matter more transparent for neutrino propagation by a factor of 2 to 10 depending of the density.

Note:

6 pages, 5 Figs., 2 Tabs

21.65.-f
21.30.Fe
26.50.+x
21.60.Jz
SKYRME EFFECTIVE INTERACTION
NUCLEAR MATTER
SPIN INSTABILITIES
RPA
NEUTRINO MEAN FREE PATH

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