THE GROUND-STATE OF NUCLEAR-MATTER WITH VIRTUAL DELTA-ISOBAR EXCITATIONS

被引：2

作者：

BALDO, M ^{[1
]}

FERREIRA, LS ^{[1
]}

机构：

[1] UNIV CATANIA,I-95129 CATANIA,ITALY

来源：

NUCLEAR PHYSICS A | 1991年 / 533卷 / 04期

关键词：

D O I：

10.1016/0375-9474(91)90538-H

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：

The equation of state of nuclear matter is studied in the framework of the Bethe-Brueckner-Goldstone theory using the local Argonne upsilon-28 Potential which explicitly includes DELTA-isobar degrees of freedom. The self-consistent two-body reaction matrix is obtained with all possible allowed couplings to the N-DELTA and DELTA-DELTA states. Saturation occurs around k(F) = 1.2 fm-1 with a binding energy per particle B/A= -10.31 MeV, confirming the effect of the isobar in pushing the saturation point to the upper side of the Coester band. The present results are very close to the ones obtained in full coupled-channel relativistic calculations.

引用

页码：651 / 662

页数：12

共 14 条

[1] INFLUENCE OF N-DELTA AND DELTA,DELTA CHANNELS ON THE SATURATION PROPERTIES OF NUCLEAR-MATTER [J].