排序方式: 共有39条查询结果,搜索用时 234 毫秒
1.
2.
3.
4.
5.
6.
通过Furnstahl,Serot和Tang模型,在引入核子-核子-ρ介子(NNρ)耦合强度对密度的依赖关系的条件下研究了核物质的汽液相变.证明存在一个极限压强Plim,当压强P>Plim时,不可能两相共存,即不可能发生汽液相变. 相似文献
7.
把 FST模型推广到包含奇异性的情形,并在平均场近似下用它来研究含有核子、Λ超子和Ξ超子的奇异强子物质的性质.讨论了有效重子质量对介质密度和奇异数含量的依赖性以及奇异强子物质的饱和性和稳定性. The strange hadronic matter with nucleon, Λ hyperon and Ξ hyperonis was studied by using an effective model in a mean field approximation. The density dependence of the effective baryon masses as well as the saturation properties and stabilities of the strange hadronic matter were discussed. The result indicates a quite large strangeness fraction range where the multi hyperon nuclear matter is stable against particle emission. In the large strangeness fraction region the Ξ component dominates... 相似文献
9.
从温度场论虚时格林函数方法出发.推导了有限温度单ρ介子交换势,得出ρ介子随温度升高而变轻,这与利用QCD标度性质得到的结果一致.还得出ρ介子与核子相互作用的耦合常数随温度变化的规律也和σ介子与核子的相似. 相似文献
10.
We study the massless scalar wave propagation in the time-dependent Banados Teitelboim-Zanelli black hole background. It is shown that in the quasi-normal ringing, both the decay and the oscillation time-scales are modified in the time-dependent background. 相似文献