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arXiv 2201.12770hep-ph
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光子的基波前量子化方法

Basis light-front quantization approach to photon

Sreeraj Nair, Chandan Mondal, Xingbo Zhao, Asmita Mukherjee, James P. Vary

摘要:

我们从光阵面量子电动力学(QED)哈密顿量的本征矢出发,求解物理光子的光阵面波函数,以确定其裸光子和正负电子Fock分量。然后,我们使用由此产生的LFWF计算的横向动量相关的部分子分布(TMD)和广义部分子分布(GPD)的光子。的TMD被发现是在良好的协议与最低阶微扰的结果计算使用的电子-正电子量子涨落的光子。GPD也与微扰计算相一致。

英文摘要:

We solve for the light-front wave functions (LFWFs) of the physical photon from the eigenvectors of the light-front quantum electrodynamics (QED) Hamiltonian with the aim to determine its bare photon and electron-positron Fock components. We then employ the resulting LFWFs to compute the transverse momentum dependent parton distributions (TMDs) and the generalized parton distributions (GPDs) of the photon. The TMDs are found to be in excellent agreement with the lowest-order perturbative results calculated using the electron-positron quantum fluctuation of the photon. The GPDs are also consistent with the perturbative calculations.

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