Finite- to zero-range relativistic mean-field interactions

被引：13
|
作者：
Niksic, T. [1 ]
Vretenar, D. [2 ]
Lalazissis, G. A. [3 ]
Ring, P. [2 ]
机构：
[1] Univ Zagreb, Fac Sci, Dept Phys, Zagreb 10000, Croatia
[2] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
[3] Aristotle Univ Thessaloniki, Dept Theoret Phys, GR-54124 Thessaloniki, Greece
来源：
PHYSICAL REVIEW C | 2008年 / 77卷 / 03期
关键词：
D O I：
10.1103/PhysRevC.77.034302
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We study the relation between the finite-range (meson-exchange) and zero-range (point-coupling) representations of effective nuclear interactions in the relativistic mean-field framework. Starting from the phenomenological interaction DD-ME2 with density-dependent meson-nucleon couplings, we construct a family of point-coupling effective interactions for different values of the strength parameter of the isoscalar-scalar derivative term. In the meson-exchange picture this corresponds to different values of the sigma-meson mass. The parameters of the isoscalar-scalar and isovector-vector channels of the point-coupling interactions are adjusted to nuclear matter and ground-state properties of finite nuclei. By comparing results for infinite and semi-infinite nuclear matter, ground-state masses, charge radii, and collective excitations, we discuss constraints on the parameters of phenomenological point-coupling relativistic effective interaction.
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页数：10
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