原子核物理评论
原子覈物理評論
원자핵물리평론
Nuclear Physics Review
2014年
3期
333-338
,共6页
蒋维洲%杨荣瑶%张东睿
蔣維洲%楊榮瑤%張東睿
장유주%양영요%장동예
对称能%超子%夸克自由度%相对论平均场理论
對稱能%超子%誇剋自由度%相對論平均場理論
대칭능%초자%과극자유도%상대론평균장이론
symmetry energy%hyperon%quark degrees of freedom%relativistic mean-field model
通常人们在有限核与核子物质中研究对称能，而本工作利用相对论平均场模型研究包含超子和夸克自由度物质的对称能。发现了含超子和夸克自由度物质中对称能的表观软化，并用相对论模型对此做了阐述。该软化现象提示由重离子碰撞产生的含非核子自由度致密物质的对称能提取将有待细致的甄别。
通常人們在有限覈與覈子物質中研究對稱能，而本工作利用相對論平均場模型研究包含超子和誇剋自由度物質的對稱能。髮現瞭含超子和誇剋自由度物質中對稱能的錶觀軟化，併用相對論模型對此做瞭闡述。該軟化現象提示由重離子踫撞產生的含非覈子自由度緻密物質的對稱能提取將有待細緻的甄彆。
통상인문재유한핵여핵자물질중연구대칭능，이본공작이용상대론평균장모형연구포함초자화과극자유도물질적대칭능。발현료함초자화과극자유도물질중대칭능적표관연화，병용상대론모형대차주료천술。해연화현상제시유중리자팽당산생적함비핵자자유도치밀물질적대칭능제취장유대세치적견별。
While the nuclear symmetry energy is usually studied in finite nuclei and nucleonic matter, we study the symmetry energy in relativistic mean-field models with the inclusion of the hyperon and quark degrees of freedom at high densities. Apparent softening of the symmetry energy with the inclusion of hyperon and quark degrees of freedom is found and demonstrated in the relativistic mean-field model. This softening would have associations with the symmetry energy extraction which needs detailed discriminations in dense matter with the admixture of new degrees of freedom created by heavy-ion collisions.
