四维动量
- 网络momentum;four-momentum
四维动量-
对于核物理中核子（质子、中子）与中性介子π0交换四维动量&能量的弹性碰撞散射问题，核物理所作的处理是基于各种位势模型并采用量子力学的方法来研究。
The scattering of elastic collision in exchanging four-dimensional momentum and energy between nuclear ( proton , neutron ) and neutral pion was solved by using potential model and adopting quantum mechanics in nucleus physics .
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定义了电磁场的四维动量流密度张量，并将电磁能量转化和守恒定律及动量转化和守恒定律写成了四维协变形式。
The four-dimensional momentum current density tensor of electromagnetic field is defined . Both law of the electromagnetic energy transformation and conservation and law of the electromagnetic momentum transformation and conservation are written into four-dimensional covariant form .