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arXiv · 2003.11781

Positronium on the light front

Kaiyu Fu·Hengfei Zhao·Xingbo Zhao·James P. Vary
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Abstract

Basis Light-front Quantization (BLFQ) is a newly developed nonperturbative approach, aiming at solving relativistic bound systems based on the Hamiltonian formalism of light-front dynamics. In this work, we introduce its application to the positronium system at strong coupling, $\alpha = 0.3$, with a dynamical photon mediating the interaction between the positron and the electron. Nonperturbative mass renormalization is needed to cancel the fermion self-energy divergence. Here, we present the resulting mass spectrum, light-front wave functions (LFWFs), and the photon distribution inside positronium.

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Kaiyu Fu, Hengfei Zhao, Xingbo Zhao, James P. Vary. 2020-03-26. Positronium on the light front. https://doi.org/10.1142/9789811219313_0093

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