SGⅡ型势不对称核物质的声速

计算物理 ›› 1990, Vol. 7 ›› Issue (2): 153-158.

SGⅡ型势不对称核物质的声速

郑国桐¹, 沈雪娥¹, 苏汝铿²

1. 杭州师范学院物理系, 310012;
2. 复旦大学物理系, 200433

收稿日期:1989-08-04 出版日期:1990-06-25 发布日期:1990-06-25
基金资助:
国家自然科学基金及国家教委基金资助

SPEED OF SOUND IN ASYMMETRIC NUCLEAR MATTER WITH SG Ⅱ-TYPE INTERACTIONS

Zheng Guotong¹, Shen Xuee¹, Su Rukeng²

1. Department of Physics, Hangzhou Teacher's College;
2. Department of Physics, Fudan University, Shanghai

Received:1989-08-04 Online:1990-06-25 Published:1990-06-25

摘要/Abstract

摘要： 本文采用SGⅡ型有效势(包括SGⅡ势和RATP势)计算了不对称核物质的声速。我们得出SGⅡ型势的自旋交换部分不能避免超光速困难。有限力程部分对声速的影响很小。本文还对因果条件的破坏和恢复因果条件的方案作了讨论。

关键词: 不对称核物质的声速, 零力程力, 有限力程力, 因果性条件

Abstract: The speed of sound in asymmetric nuclear matter with SG Ⅱ-type potential (including SG Ⅱ and RATP potential) is calculated. We find that the spin exchange part of SG Ⅱ-type potential cannot avoid the difficult of superluminosity. The effect of finite-range force fot the speed of sound is very small. The violation and the restoration of causal condition are discussed.

Key words: the speed of sound in asymmetric nuclear matter, zero-range force finite-range force, causal condition

郑国桐, 沈雪娥, 苏汝铿. SGⅡ型势不对称核物质的声速[J]. 计算物理, 1990, 7(2): 153-158.

Zheng Guotong, Shen Xuee, Su Rukeng. SPEED OF SOUND IN ASYMMETRIC NUCLEAR MATTER WITH SG Ⅱ-TYPE INTERACTIONS[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 1990, 7(2): 153-158.