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arXiv 0810.1604math-phmath.MP
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Hamilton算符与电磁场中标量粒子的半经典极限

Hamilton Operator and the Semiclassical Limit for Scalar Particles in an Electromagnetic Field

Alexander J. Silenko

摘要:

本文先后应用广义Case-Foldy-Feshbach-Villars(CFFV)和Foldy-Wouthuysen(FW)变换导出了电磁场中相对论标量粒子的哈密顿量。与原始变换相比,广义CFFV变换包含任意参数,并且可以对无质量粒子执行,这允许解决电磁场中无质量粒子的问题。我们表明,形式的FW表示的哈密顿量是独立的任意选择的参数。与经典的点粒子的哈密顿量相比,该哈密顿量包含了运动粒子与电场的四极耦合的量子项以及极化率和混合极化率。得到了电磁场中有质量和无质量粒子的量子力学和半经典运动方程。

英文摘要:

We successively apply the generalized Case-Foldy-Feshbach-Villars (CFFV) and the Foldy-Wouthuysen (FW) transformation to derive the Hamiltonian for relativistic scalar particles in an electromagnetic field. In contrast to the original transformation, the generalized CFFV transformation contains an arbitrary parameter and can be performed for massless particles, which allows solving the problem of massless particles in an electromagnetic field. We show that the form of the Hamiltonian in the FW representation is independent of the arbitrarily chosen parameter. Compared with the classical Hamiltonian for point particles, this Hamiltonian contains quantum terms characterizing the quadrupole coupling of moving particles to the electric field and the electric and mixed polarizabilities. We obtain the quantum mechanical and semiclassical equations of motion of massive and massless particles in an electromagnetic field.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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