Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Alternatives to dark matter: Modified gravity as an alternative to dark
  matter   The premier alternative to the dark matter paradigm is modified gravity.
Following an introduction to the relevant phenomenology of galaxies, I review
the MOND paradigm, an effective summary of the observations which any theory
must reproduce. A simple nonlinear modified gravity theory does justice to MOND
at the nonrelativistic level, but cannot be elevated to the relativistic level
in a unique way. I go in detail into the covariant tensor-vector-theory (TeVeS)
which not only recovers MOND but can also deal in detail with gravitational
lensing and cosmology. Problems with MOND and TeVeS at the level of clusters of
galaxies are given attention. I also summarize the status of TeVeS cosmology.

9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
1
The categories of this paper are: cs