Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure of radiative corrections in a strong constant crossed field in
  the bubble-chain approximation   We present a calculation of the electron mass operator combining the
bubble-chain photon and the leading order electron propagators in a strong
constant crossed electromagnetic field. The photon propagator is obtained by a
summation of the Dyson series over 1PI polarization loop insertions and is
accounted for in general form. By applying the derived mass operator, we find
the bubble-chain electron propagator and the elastic scattering amplitude. The
results are expressed in the general form of expansion over $\gamma$-matrix
structures, each multiplied by a scalar invariant function of the electron
virtuality and the quantum dynamical parameter $\chi$. We perform their
asymptotic analysis and identify the dominant contribution at $\chi\gg 1$. The
presented calculations can be generalized by replacing the leading order
electron propagator with the bubble-chain one. This will allow a consistent
study the Dyson-Schwinger equations in the fully nonperturbative regime
$\alpha\chi^{2/3}\gtrsim1$ within the bubble-chain approximation. In addition,
we accompany our paper with the open-access computer-algebraic scripts
containing all the presented computations
[https://github.com/ArsenyMironov/SFQED-Loops].

13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
2
The categories of this paper are: math
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio