Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of the universe in the modified unimodular theory of gravity   The equations that govern the dynamics of the universe in the modified
unimodular theory of gravity are derived. We find a mechanism for inflation in
the early universe without postulating a false vacuum state during the first
$10^{-35}$ seconds after the Big Bang. In addition, we find a natural
explanation for the acceleration of the universe without resorting to dark
energy.

34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
13
The categories of this paper are: quant-ph
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat