Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining Born-Infeld-like Nonlinear Electrodynamics Using Hydrogen's
  Ionization Energy   In this work, the hydrogen's ionization energy was used to constrain the free
parameter $b$ of three Born-Infeld-like electrodynamics namely Born-Infeld
itself, Logarithmic electrodynamics and Exponential electrodynamics. An
analytical methodology capable of calculating the hydrogen ground state energy
level correction for a generic nonlinear electrodynamics was developed. Using
the experimental uncertainty in the ground state energy of the hydrogen atom,
the bound $b>5.37\times10^{20}K\frac{V}{m}$, where $K=2$, $4\sqrt{2}/3$ and
$\sqrt{\pi}$ for the Born-Infeld, Logarithmic and Exponential electrodynamics
respectively, was established. In the particular case of Born-Infeld
electrodynamics, the constraint found for $b$ was compared with other
constraints present in the literature.

15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
14
The categories of this paper are: math-ph