Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Abelian Effects in Gravitation   The non-abelian symmetry of a lagrangian invalidates the principle of
superposition for the field described by this lagrangian. A consequence in QCD
is that non-linear effects occur, resulting in the quark-quark linear potential
that explains the quark confinement, the quarkonia spectra or the Regge
trajectories. Following a parallel between QCD and gravitation, we suggest that
these non-linear effects should create an additional logarithmic potential in
the classical newtonian description of gravity. The modified potential may
account for the rotation curve of galaxies and other problems, without
requiring dark matter.

18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th