论文标题
将重型离子碰撞中的波动测量与宏伟的典型相连接
Connecting fluctuation measurements in heavy-ion collisions with the grand-canonical susceptibilities
论文作者
论文摘要
我们得出了在热系统的子体积中测量的保守电荷的累积物与相应的大型典型敏感性之间的关系，这是考虑到该电荷的全球保护。提出了针对状态的任意方程式的推导，假设子体积足够大，可以接近热力学极限。我们的框架 - 亚汇期接受方法（SAM） - 量化了全球保护法的效果，是在中央重离子碰撞中测得的保守指控累积物与诸如lattice QCD之类的宏伟典型敏感性的理论计算的重要一步。例如，我们将形式主义应用于净 - 巴里族的波动，以消除LHC和RHIC碰撞中遇到的Baryon化学潜力。
We derive the relation between cumulants of a conserved charge measured in a subvolume of a thermal system and the corresponding grand-canonical susceptibilities, taking into account exact global conservation of that charge. The derivation is presented for an arbitrary equation of state, with the assumption that the subvolume is sufficiently large to be close to the thermodynamic limit. Our framework -- the subensemble acceptance method (SAM) -- quantifies the effect of global conservation laws and is an important step toward a direct comparison between cumulants of conserved charges measured in central heavy ion collisions and theoretical calculations of grand-canonical susceptibilities, such as lattice QCD. As an example, we apply our formalism to net-baryon fluctuations at vanishing baryon chemical potentials as encountered in collisions at the LHC and RHIC.
