Dynamical interpretation of chemical freeze-out in heavy ion collisions
Dynamical interpretation of chemical freeze-out in heavy ion collisions
复制标题
重离子碰撞中化学冻结的动力学解释
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
Poland
中科院分区：
文献类型：
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作者：
V. Toneev;J. Cleymans;E. Nikonov;K. Redlich;A. A. S. G. F. Schwerionenforshung;Darmstadt;G. G. S. O. Physics;Jinr;Dubna;Moscow Region;R. D. O. Physics;U. C. Town;Rondebosch;South Africa Institute of Theoretical Physics;U. Wroclaw;Wrocław;Poland
证明了化学冻结点与状态方程的最软点之间存在着直接的相关性，在该点上，压强除以能量密度$p(Epsilon)/epsilon$有一个最小值。作为例子，给出了一个动力学模型，其中最软点的通过符合化学冻结的条件，即每个强子的平均能量约为1GeV。讨论了结果对所用状态方程的敏感性。
It is demonstrated that there exists a direct correlation between chemical freeze-out point and the softest point of the equation of state where the pressure divided by the energy density, $p(epsilon)/epsilon$, has a minimum. A dynamical model is given as an example where the passage of the softest point coincides with the condition for chemical freeze-out, namely an average energy per hadron $approx$ 1 GeV. The sensitivity of the result to the equation of state used is discussed.