Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phenomenological Varying Modified Chaplygin Gas with Variable $G$ and
  $\Lambda$: Toy Models for Our Universe   This article motivated by the recent articles and results of two authors.
Recently, J. Sadeghi and H. Farahani presented a work [1], where they include
viscosity and analyze general model, by this way they extended models
considered by M. Khurshudyan [2] and [3]. In this article, We tempt to consider
varying Modified Chaplygin gas model in case of variable $G$ and $\Lambda$. It
is well known, that varying $G$ and $\Lambda$ gives rise to modified field
equations and modified conservation laws. We will consider two different toy
models. First model is a Universe with one component phenomenological gas of
our consideration, while for the second model we assume existence of a composed
fluid of gas and a matter with $P=\omega(t)\rho_{m}$. Sign changeable
interaction between fluids is accepted. We will analyze important cosmological
parameters like EoS parameter of a fluid, deceleration parameter $q$ of the
model.

11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
3
The categories of this paper are: physics
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess