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Weyl-Wigner-Moyal相空间中的标量带电粒子。恒定磁场

Scalar charged particle in Weyl--Wigner--Moyal phase space. Constant magnetic field

B. I. Lev, A. A. Semenov, C. V. Usenko

摘要:

提出了一类具有与单位矩阵成比例的矩阵值Weyl符号的观测量(电荷不变观测量)的相对论相空间表示。我们考虑到的位置和动量算子的非平凡的电荷结构。在不产生粒子对的条件下(自由粒子和恒定磁场),演化方程与相对论量子力学中具有非定域哈密顿量的类似方程相吻合。方程中的差异与初始条件的约束特性有关。一个有效的增加本征态的哈密顿量之间的相干性被发现,其实验观察的可能性进行了讨论。

英文摘要:

A relativistic phase-space representation for a class of observables with matrix-valued Weyl symbols proportional to the identity matrix (charge-invariant observables)is proposed. We take into account the nontrivial charge structure of the position and momentum operators. The evolution equation coincides with its analog in relativistic quantum mechanics with nonlocal Hamiltonian under conditions where particle-pair creation does not take place (free particle and constant magnetic field). The differences in the equations are connected with peculiarities of the constraints on the initial conditions. An effective increase in coherence between eigenstates of the Hamiltonian is found and possibilities of its experimental observation are discussed.

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