论文标题
灌肠中的手性平均状状态状态：重离子压缩阶段的影响
A Chiral Mean-Field Equation-of-State in UrQMD: Effects on the Heavy Ion Compression Stage
论文作者
论文摘要
结果表明，$ e_ \ mathrm {lab} = 1-10a $ 〜GEV的中央重离子碰撞中中央重离子碰撞中的初始压缩极大地取决于状态的基础方程，并且仅略微取决于用于动态描述的模型。为此，引入了将任何状态方程式合并到URQMD传输模型中的程序。特别是我们比较了在相对论的理想流体动力学方法和URQMD传输模型中比较Baryon的密度，温度和压力演化以及产生的熵，其中两种方法都使用了相同的状态方程。如果在任何一个动态模型中使用相同的状态方程式，则压缩不仅相似，而且还强烈取决于状态的实际方程。这些结果表明，可以使用对初始压缩阶段敏感的可观察结果来研究状态方程，并在这些束能量的重离子碰撞中获得的最大压缩。
It is shown that the initial compression in central heavy ion collisions at beam energies of $E_\mathrm{lab}=1-10A$~GeV depends dominantly on the underlying equation of state and only marginally on the model used for the dynamical description. To do so, a procedure to incorporate any equation of state in the UrQMD transport model is introduced. In particular we compare the baryon density, temperature and pressure evolution as well as produced entropy in a relativistic ideal hydrodynamics approach and the UrQMD transport model, where the same equation of state is used in both approaches. Not only is the compression similar if the same equation of state is used in either dynamical model, but it also strongly depends on the actual equation of state. These results indicate that the equation of state can be studied with observables which are sensitive to the initial compression phase and maximum compression achieved in heavy ion collisions at these beam energies.
