论文标题
类似速度的最大极化：不可逆性和量子测量值
Velocity-like maximum polarization: irreversibility and quantum measurements
论文作者
论文摘要
随后的散射过程中出现的极化永远不会超过$ 1 $，这与完全极化的纯状态相对应。该属性显示出与相对论速度相似的添加规则所提供的，永远不会超过光速。考虑了旋转$ 1/2 $和$ 1 $的案例。汤姆森散射中的光子线性极化在单调上增加。该直接性显示为自旋测量程序的结果，可能是量子测量与时间不可逆性之间预期关系的特定例子。突然的极化可以被视为分别对应于显微镜（自旋）和宏观（动量）自由度的相对时间箭头的情况。
The polarization emerging in the subsequent scattering processes can never exceed $1$ which corresponds to the fully polarized pure state. This property is shown to be provided by the addition rule similar to that for relativistic velocities never exceeding the speed of light. The cases of spin $1/2$ and $1$ are considered. The photon linear polarization in Thomson scattering is monotonically increasing. This directness is shown to be a consequence of spin measurement procedure and may be the particular example of ithe anticipated relation between quantum measurement and time irreversibility. The emergent polarization may be considered as a case of opposing time's arrows corresponding to microscopic (spin) and macroscopic (momentum) degrees of freedom, respectively.
