Global properties of the skyrme-force-induced nuclear symmetry energy - INSPIRE

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Global properties of the skyrme-force-induced nuclear symmetry energy

Wojciech Satula
(
- Warsaw U. and
- Royal Inst. Tech., Stockholm
)
,
Ramon A. Wyss
(
- Royal Inst. Tech., Stockholm
)
,
Michal Rafalski
(
- Warsaw U.
)

Aug, 2005

4 pages

Published in:

Phys.Rev.C 74 (2006) 011301

e-Print:

nucl-th/0508004 [nucl-th]

DOI:

10.1103/PhysRevC.74.011301

View in:

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Abstract:

Large scale calculations are performed to establish the global mass dependence of the nuclear symmetry energy,

a_{sym}(A)

, which in turn depends on two basic ingredients: the mean-level spacing,

\epsilon(A)

, and the effective strength of the isovector mean-potential,

\kappa(A)

. Surprisingly, our results reveal that in modern parameterizations including SLy4, SkO, SkXc, and SkP these two basic ingredients of

a_{sym}

are almost equal after rescaling them linearly by the isoscalar and the isovector effective masses, respectively. This result points toward a new fundamental property of the nuclear interaction that remains to be resolved. In addition, our analysis determines the ratio of the surface-to-volume contributions to

a_{sym}

to be

\sim

1.6, consistent with hydrodynamical estimates for the static dipole polarizability as well as the neutron-skin.

Note:

4 pages, 2 figures, 1 table

21.30.Fe
21.60.Jz

References(21)

Figures(0)

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