电磁场正则量子化方法的协变性证明

在本文中，利用电磁场正则量子化方法得出等时对易关系理论的不变性，在坐标系平移和空间旋转下予以证明．为了做到这些，除拉氏密度L(x)为标量外，还要导出势A^v(x)满足的务件，他们由M^ck生成的一个无穷小Lorentz变换得到，然后，证明Maxwell方程是Lorentz协变的，也证明了等时对易关系在变换后的坐标中仍然是正确的．

The Proof of Covariance for Canonical Quantization's Approach to Electromagnetic Field

In this paper, it is derived from canonical quantization's approach to electromagnetic field that the theoretical invariance for equal-time commutation relations should be proved under translation of system of coordinates and rotations of space.So the satisfied conditions of the potential A u(x) should be derived from M ok genenating an infinitesimal lorentz transform, bseides taking the Lagrangian L(x) as the scalar quantity. And then,that the Maxwell equations were covariant should be proved, and equal-time commutaion relations were correct also in frame of reference transfromed.