Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational lensing of wormholes in noncommutative geometry   It has been shown that a noncommutative-geometry background may be able to
support traversable wormholes. This paper discusses the possible detection of
such wormholes in the outer regions of galactic halos by means of gravitational
lensing. The procedure allows a comparison to other models such as the
Navarro-Frenk-White model and f(R) modified gravity and is likely to favor a
model based on noncommutative geometry.

23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
27
The categories of this paper are: comp-gas