Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of Brans-Dicke cosmology with varying mass fermions   In this paper, the cosmological dynamics of Brans-Dicke theory in which there
are fermions with a coupling to BD scalar field as well as a self-interaction
potential is investigated. The conditions that there exists a solution which is
stable and represents a late-time accelerated expansion of the universe are
found. The variable mass of fermions can not vanish exactly during the
evolution of the universe once it exists initially. It is shown that the
late-time acceleration depends completely on the self-interaction of the
fermionic field if our investigation is restricted to the theory with positive
BD parameter $\omega$. Provided a negative $\omega$ is allowed, there will be
another two class of stable solutions describing late-time accelerated
expansion of the universe.

8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess