Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-accelerating solutions in massive gravity on an isotropic reference
  metric   Within the framework of the recently proposed ghost-free massive gravity, a
cosmological constant-type self-accelerating solution has been obtained for
Minkowski and de Sitter reference metrics. We ease the assumption on the
reference metric and find the self-accelerating solution for the reference
metric respecting only isotropy, thus considerably extending the range of known
solutions.

33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn