Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New asymptotic techniques for the partial wave cut-off method for
  calculating the QED one loop effective action   The Gel'fand-Yaglom theorem has been used to calculate the one-loop effective
action in quantum field theory by means of the "partial-wave-cutoff method".
This method works well for a wide class of background fields and is essentially
exact. However, its implementation has been semi-analytical so far since it
involves solving a non-linear ordinary differential equation for which
solutions are in general unknown. Within the context of quantum electrodynamics
(QED) and $O(2)\times O(3)$ symmetric backgrounds, we present two complementary
asymptotic methods that provide approximate analytical solutions to this
equation. We test these approximations for different background field
configurations and mass regimes and demonstrate that the effective action can
indeed be calculated with good accuracy using these asymptotic expressions. To
further probe these methods, we analyze the massless limit of the effective
action and obtain its divergence structure with respect to the radial
suppression parameter of the background field, comparing our findings with
previously reported results.

28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin