论文标题
阿贝尔电荷的规范合奏中的波动
Fluctuations in the canonical ensemble of an Abelian charge
论文作者
论文摘要
我们研究了净得多的净得分数量完全保守的规范合奏中的波动。重点放在与重子和抗亚伯亚元素相关的累积和阶乘累积物以及它们在全相位和子系统中的总和或差异。特别是，我们将子系统净baryon数的波动连接起来，与核核碰撞的波动研究有关，巴里昂的波动和总系统的抗体数量的波动。我们得出任意顺序的阶乘累积分析表达式。紧凑型结果是根据总系统的重子数量的累积来获得的。此外，我们在高温和低温限制中得出了Baryon和抗体多重性的阶乘累积物的渐近形式，并在重离子碰撞实验的背景下讨论了结果。
We study fluctuations in the canonical ensemble, where the net baryon number is exactly conserved. The focus is on cumulants and factorial cumulants linked to the baryon and antibaryon multiplicities and their sum or difference in full phase-space as well as in subsystems. In particular, we connect the fluctuations of the net baryon number in a subsystem, relevant for fluctuation studies in nucleus-nucleus collisions, with fluctuations of the baryon and antibaryon numbers of the total system. We derive analytic expressions for factorial cumulants of arbitrary order. Compact results are obtained in terms of cumulants of the baryon number of the total system. Moreover, we derive the asymptotic forms of the factorial cumulants of baryon and antibaryon multiplicities in the high- and low-temperature limits and discuss the results in the context of heavy-ion collision experiments.
