这反映在量子场论中场量平方的真空平均值不为零，这就是所谓的真空涨落。
This is reflected in the fact that the vacuum expectation value of the field squared is nonzero in quantum field theory. Therefore there exist the so called vacuum fluctuations.
在此基础上，研究了热真空态下各支路电流和电压的量子涨落。
On this basic theory, we have studied quantum fluctuations of the voltage and current of each branch in thermal vacuum state.
本文对压缩真空态的相位涨落进行了计算，给出了一般表达式，发现了压缩态的一些性质。
The general formula of phase fluctuation are given for the squeezed vacuum of Light. The properties of squeezed vacuum of light are found.
应用推荐