幺正性(英语:Unitarity)是物理学名词,指的是某个物质于时刻t在全空间找到粒子的总概率等于1。若微观粒子不能产生和湮没,那么某时刻波函数满足归一化条件,则在任何时刻,波函数都将保持归一化(概率守恒)。它叙述的是微观过程物质不灭的原理。
换言之,矩阵的厄密性在幺正变换下保持不变。
In other words, the Hermiticity of a matrix is invariant under unitary transformations.
本论文从可分(非纠缠)性的判别及局域幺正变换下的不变量的等价类的角度来研究量子纠缠的性质。
We have investigated the properties of entanglement by criterion of separability (non-entanglement) and equivalence of quantum states under local unitary transformations.
采用线性组合算符和幺正变换方法研究量子点中强耦合束缚磁极化子性质的温度依赖性,导出了强耦合束缚磁极化子的振动频率、基态能量和声子平均数随温度的变化关系。
The relations of the vibrational frequency, the ground state energy, and the mean number of phonons of the strong-coupling bound magnetopolaron in a quantum dot with the temperature are derived.
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