Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Born-Infeld generalization of the Reissner-Nordstrom black hole   In this work we study the trajectories of test particles in a geometry that
is the nonlinear electromagnetic generalization of the Reissner-Nordstrom
solution. The studied spacetime is a Einstein-Born-Infeld solution, nonsingular
outside a regular event horizon and characterized by three parameters: mass
$M$, charge $Q$ and the Born-Infeld parameter $b$ related to the magnitude of
the electric field at the origin. Asymptotically it is a Reissner-Nordstrom
solution

20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th