The grand partition function helps us find the average number of particles in the system.
巨正则配分函数帮助我们求出体系的平均粒子数。
In the grand canonical ensemble, the grand partition function \( \Xi \) sums over all particle numbers and energy states, allowing thermodynamic quantities to be derived from derivatives with respect to temperature and chemical potential.
在巨正则系综中,巨正则配分函数 \( \Xi \) 对所有粒子数与能量状态求和,从而可以通过对温度和化学势求导来导出热力学量。