Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Positronium on the light front   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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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
16
The categories of this paper are: stat
10
The categories of this paper are: q-bio
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The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
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The categories of this paper are: econ
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The categories of this paper are: eess
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph