RHO-MESON COUPLING IN THE RELATIVISTIC MEAN-FIELD THEORY AND DESCRIPTION OF EXOTIC NUCLEI

被引：612

作者：

SHARMA, MM ^{[1
]}

NAGARAJAN, MA ^{[1
]}

RING, P ^{[1
]}

机构：

[1] TECH UNIV MUNICH, DEPT PHYS, W-8046 GARCHING, GERMANY

来源：

PHYSICS LETTERS B | 1993年 / 312卷 / 04期

关键词：

D O I：

10.1016/0370-2693(93)90970-S

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The role of the isovector rho-meson coupling on the symmetry energy in the relativistic mean-field theory has been investigated. In a multi-dimensional parameter search for an appropriate force within the framework of the non-linear sigmapmegarho model the rho-meson coupling has been found to have a significant effect on the neutron skin of nuclei. It has been shown that a low value of rho-meson coupling strength remedies the defect of some of the existing parameter sets of providing a higher neutron skin thickness of nuclei. An extraordinarily good description of highly proton- as well as neutron-rich exotic nuclei has been found. It has been observed that the proper description of both proton-rich and neutron-rich nuclei is sensitive to the symmetry energy.

引用

页码：377 / 381

页数：5

共 17 条

[1]

BATTY CJ, 1989, ADV NUCL PHYS, V19, P1

[2] RELATIVISTIC CALCULATION OF NUCLEAR-MATTER AND NUCLEAR SURFACE [J].