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arXiv · 2201.12770

Basis light-front quantization approach to photon

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

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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Sreeraj Nair, Chandan Mondal, Xingbo Zhao, Asmita Mukherjee, James P. Vary. 2022-02-01. Basis light-front quantization approach to photon. https://doi.org/10.1016/j.physletb.2022.137005

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