论文标题
相对论重离子碰撞中的温度波动和tsallis统计
Temperature fluctuations and Tsallis statistics in Relativistic Heavy Ion collisions
论文作者
论文摘要
我们使用多相传输模型研究了相对论重离子碰撞的初始阶段的温度波动。在碰撞之前，我们在初始阶段考虑血浆，然后才有可能平衡。我们已经考虑了AU + AU与200 GEV的质量能量中心相撞。我们使用非广泛的Tsallis统计数据在相对论重离子碰撞的党派阶段找到熵指数。我们发现，在重离子碰撞的党派阶段，温度和熵指数具有线性关系。这已经在辐射阶段观察到。对系统对熵指数的依赖性的详细分析表明，为了提高时空速度，党派系统的熵指数增加。熵指数还取决于光束碰撞能量。横向动量的实验数据拟合的熵指数的计算涉及辐射阶段。但是，我们当前的研究表明，在碰撞的初始非平衡阶段，熵指数的行为与在耐药阶段的熵指数的行为非常相似。
We study temperature fluctuations in the initial stages of the relativistic heavy ion collision using a multiphase transport model. We consider the plasma in the initial stages after collision before it has a chance to equilibrate. We have considered Au + Au collision with a center of mass energy of 200 GeV. We use the non extensive Tsallis statistics to find the entropic index in the partonic stages of the relativistic heavy ion collisions. We find that the temperature and the entropic index have a linear relationship during the partonic stages of the heavy ion collision. This has already been observed in the hadronic phase. A detailed analysis of the dependence of the entropic index on the system shows that for increasing space time rapidity, the entropic index of the partonic system increases. The entropic index also depends on the beam collision energy. The calculation of the entropic index from the experimental data fitting of the transverse momenta deals with the hadronic phase. However, our current study shows that the behaviour of the entropic index in the initial non-equilibrium stage of the collision is very similar to the behaviour of the entropic index in the hadronic stage.
