The master equations of a reduced system density operator , by means of the Liouville equation and the projection operators techniques have been derived.
在本文中我们利用投影算符技巧通过刘维方程推导了系统约化密度主方程，这种方法特别适合于赝非马尔可夫的库场情况。
Methods the distance between two different multimode odd coherent state light fields was analyzed theoretically by the method of distance functions of density operator.
方法采用两个不同态的密度算符距离函数方法，从理论上研究两个不同多模奇相干态光场之间的距离。
Using it we can conveniently and simply convert a ME into its corresponding differential equation and from solution of which we can extract the reduced density operator.
该方法能方便、简洁地将密度主方程转化为对应的普通微分方程，并能从微分方程的解中提取出约化密度算符。
The evolution opera tor, the reduce density operator and the dynamical properties of the field entropy evolution in the intensity - dependent coupling multiphoton J - C model are studied.
研究了依赖强度耦合多光子J—C模型的演化算符，约化密度算符及其场熵特性。
In the quantum statistical theory, the density operator is introduced in the statistical system. The expectation value of an obeservable can be obtained by the use of the density operator.
在量子统计中，对统计系综引入了密度算符，力学量的平均值可以利用密度算符求出。
However, RMS deviation only contains the second-order statistical moments of the density operator. Thus under many circumstances, RMS deviation cannot precisely measure the quantum fluctuation.
由于均方根偏差只涉及光场密度矩阵的二阶统计矩，在许多情况下，这种物理量不能精确量度光场的量子涨落。
An analytic representation for the third-harmonic generation along the well is derived by the density matrix operator theory of the quantum mechanics.
利用量子力学中的密度矩阵算符理论导出了该系统中三次谐波产生的解析表达式。
The wave function and probability density are obtained by the creation and annihilation operators of the invariant operator.
通过不变量算子的产生和湮灭算符，得到波函数和几率密度。
In order to reduce radiation on the operator, a remote-control nuclear surface moisture-density gauge is developed by improving the original nuclear surface moisture-density gauge.
为减少放射源对仪器操作人员辐射的影响，对表层型核子水分-密度仪进行了改进，研制出遥读遥测式表层型核子水分-密度仪。
The proof is based on an energy inequality and the density of the range of the operator generated by the studied problem.
本文研究高阶复合方程基于能量不等式和生成算子的稠密性。
In one case, an operator used the density measurement to identify shallow hydrocarbon deposits in a 17-1/2-inch borehole.
在其中一次应用中，作业者使用密度测量数据来识别17-1/2英寸井眼中油气含量较低的储层。
In general, the speed depends on material hardness of the wear and tear, salaries rod density, the operator of the machine operating proficiency and propeller repair welding alloy used in the quality.
一般说来，磨损快慢取决于原料的硬度、薪棒的密度、操作人员对机器的操作熟练程度及修复推进器所使用的合金焊条质量。
With the aid of the projective operator technique, an integro-differential equation for the porbability density and an approximate equation for the mean first-passage time (MFPT) have been derived.
推导了平均第一通过时间（MFPT）方程，并在弱噪声和短相关近似下，得出方程的解； 通过数值分析阐明了平均第一通过时间和噪声关联时间之间的联系。
With the aid of the projective operator technique, an integro-differential equation for the porbability density and an approximate equation for the mean first-passage time (MFPT) have been derived.
推导了平均第一通过时间（MFPT）方程，并在弱噪声和短相关近似下，得出方程的解； 通过数值分析阐明了平均第一通过时间和噪声关联时间之间的联系。
应用推荐