Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Static and spherically symmetric general relativity solutions in Minimal
  Theory of Bigravity   We investigate static and spherically symmetric solutions in the Minimal
Theory of Bigravity (MTBG). First, we show that a pair of Schwarzschild-de
Sitter spacetimes with different cosmological constants and black hole masses
written in the spatially-flat Gullstrand-Painlev\'e (GP) coordinates is a
solution in the self-accelerating branch of MTBG, while it cannot be a solution
in the normal branch. We then illustrate how Schwarzschild-de Sitter solutions
can become compatible with the normal branch when using different coordinates.
We also confirm that the self-accelerating branch of MTBG admits static and
spherically symmetric general relativity solutions with matter written in the
spatially-flat coordinates, including neutron stars with arbitrary matter
equations of state. Finally, we show that in the self-accelerating branch
nontrivial solutions are given by the Schwarzschild-de Sitter metrics written
in nonstandard coordinates.

30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
2
The categories of this paper are: math
36
The categories of this paper are: cmp-lg
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The categories of this paper are: eess
3
The categories of this paper are: physics
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The categories of this paper are: funct-an
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The categories of this paper are: econ
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an