COLLECTIVE MODES IN HOT AND DENSE NUCLEAR-MATTER

被引：24

作者：

NIELSEN, M ^{[1
]}

PROVIDENCIA, C ^{[1
]}

DAPROVIDENCIA, J ^{[1
]}

机构：

[1] UNIV COIMBRA, DEPT FIS, INIC, CTR FIS TEOR, P-3000 COIMBRA, PORTUGAL

来源：

PHYSICAL REVIEW C | 1993年 / 47卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.47.200

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 solutions of the Vlasov equation based on the Walecka model applied to hot and dense nuclear matter are obtained and discussed. It is observed that the effective mass of scalar and vector mesons raises only slightly with temperature for T < 180 MeV while the effective nucleon mass decreases. The collective longitudinal modes are obtained and the coupling between them is studied through the energy-weighted sum rule. At finite temperature it is found that the zero sound mode emerges in the continuum of particle-hole excitations.

引用

页码：200 / 209

页数：10

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