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arXiv · 1702.06932

Particle distribution in intense fields in a light-front Hamiltonian approach

Guangyao Chen·Xingbo Zhao·Yang Li·Kirill Tuchin·James P. Vary
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Abstract

We study the real-time evolution of an electron influenced by intense electromagnetic fields using the time-dependent basis light-front quantization (tBLFQ) framework. We focus on demonstrating the non-perturbative feature of the tBLFQ approach through a realistic application of the strong coupling QED problem, in which the electromagnetic fields are generated by an ultra-relativistic nucleus. We calculate transitions of an electron influenced by such electromagnetic fields and we show agreement with light-front perturbation theory when the atomic number of the nucleus is small. We compare tBLFQ simulations with perturbative calculations for nuclei with different atomic numbers, and obtain the significant higher-order contributions for heavy nuclei. The simulated real-time evolution of the momentum distribution of an electron evolving inside the strong electromagnetic fields exhibits significant non-perturbative corrections comparing to light-front perturbation theory calculations. The formalism used in this investigation can be extended to QCD problems in heavy ion collisions and electron ion collisions.

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Guangyao Chen, Xingbo Zhao, Yang Li, Kirill Tuchin, James P. Vary. 2017-02-22. Particle distribution in intense fields in a light-front Hamiltonian approach. https://doi.org/10.1103/physrevd.95.096012

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