Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Euler-Heisenberg lagrangian through Krein regularization   The Euler-Heisenberg effective action at the one-loop for a constant
electromagnetic field is derived in Krein space quantization with Ford's idea
of uctuated light-cone. In this work we present a perturbative, but convergent
solution of the effective action. Without using any renormalization procedure,
the result coincides with the famous renormalized Euler-Heisenberg action.

27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn