论文标题
SPS和RHIC BES Energies的Nucleus-Nucleus碰撞中Quark-Gluon等离子体演化的局部能量弹药和初始条件
Local energy-momentum conservation and initial conditions for quark-gluon plasma evolution in nucleus-nucleus collisions at SPS and RHIC BES energies
论文作者
论文摘要
我们调查了局部能量摩托明群保护对重离子碰撞初始偏心系数的后果，这与CERN SPS和RHIC BES无关。考虑了可用于PION生产的不同模型。我们研究了偏心系数对不同影响参数的时空速度速度的依赖性。天真的公式如何定义偏心率在我们的初始条件下破裂，必须纠正。我们预测$ε_{1,2,3,4} $的偏心率以及对时空速度以及较低能量的影响参数的特定依赖性。当限制狭窄的速度间隔零时，在较大能量下的效果变得较小。我们的预测原则上是进一步流体动力学进化的投入，但尚不清楚它们是否可以轻松使用。我们的初始条件表明，很难建模。
We investigate consequences of local energy-momentum conservation for initial eccentricity coefficients in heavy ion collisions at not too high energies relevant for CERN SPS and RHIC BES. Different models of energy density available for pion production are considered. We study dependence of eccentricity coefficients on space-time rapidity for different impact parameters. The naive formula how to define eccentricities breaks with our initial conditions and must be corrected. We predict considerable eccentricities for $ε_{1,2,3,4}$ and specific dependence on space-time rapidity as well as on impact parameter for lower energies. The effect becomes smaller at larger energies when restricting to narrow rapidity interval arround zero. Our predictions are in principle input for further hydrodynamical evolution but it is not clear whether they can be easily used. Our initial condition suggest a strong preequilibrium phase which is difficult for modelling.
