MULTIPLE PRODUCTION OF PHOTONS IN QUANTUM ELECTRODYNAMICS
MULTIPLE PRODUCTION OF PHOTONS IN QUANTUM ELECTRODYNAMICS
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DOI：
10.1103/physrev.126.329
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发表时间：
1962-04
期刊：
影响因子：
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通讯作者：
K. Mahanthappa
中科院分区：
文献类型：
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作者：
K. Mahanthappa
在量子电动力学中，一种旨在直接评估物理量期望值的形式被应用于涉及多次光子产生的过程。这一应用是通过构造格林函数来实现的，格林函数是通过将其展开为电磁场的硬光子部分和软光子部分来实现的。给出了红外发散的一般处理方法。计算了n光子在库仑散射和对湮灭中的产生截面。讨论了格林函数在硬光子部分和软光子部分展开式的局限性。(Auth)给出了高能量子电动力学中具有n光子发射的高能初级过程截面的一个合理的推广。
A formalism intended to evaluate the expectation value of physical quantities directly is applied to processes involving multiple production of photons in quantum electrodynamics. This application is achieved by constructing the Green's function, which is accomplished by expanding it in terms of hard and soft photon parts of the electromagnetic field. A general treatment of infrared divergence is given. The cross section for n-photon production in Coulomb scattering and pair annihilation is evaluated. The limitation of the expansion of the Green's function in terms of hard and soft photon parts is examined. A plausible generalization regarding the cross section of any primary process in quantum electrodynamics at high energies with n-photon emission in the final state is enunclated, (auth)