论文标题
QCD在有限密度的核碰撞状态方程
QCD equation of state at finite densities for nuclear collisions
论文作者
论文摘要
我们根据晶格QCD模拟和强子共振气体模型的结果，在有限的化学电位上构建QCD状态方程。奇怪中立性和类似于重核的固定电荷与巴里亚比的情况被认为是用于应用相对论重离子碰撞的情况。与消失的陌生性和电荷化学电位的情况相比，这增加了重晶化学势的值，从而改变了相图中的火球轨迹。我们执行粘性流体动力模拟，并证明了在RHIC和SPS束能量扫描能量中，多种化学势对鉴定出颗粒产生的重要性。
We construct the QCD equation of state at finite chemical potentials including net baryon, electric charge, and strangeness based on the results of lattice QCD simulations and the hadron resonance gas model. The situation of strangeness neutrality and a fixed charge-to-baryon ratio, which resembles that of heavy nuclei, is considered for the application to relativistic heavy-ion collisions. This increases the values of baryon chemical potential compared to the case of vanishing strangeness and electric charge chemical potentials, modifying the fireball trajectory in the phase diagram. We perform viscous hydrodynamic simulations and demonstrate the importance of multiple chemical potentials for identified particle production in heavy-ion collisions at the RHIC and SPS beam energy scan energies.
