Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: LRS Bianchi type-I bulk viscous cosmological models in $f(R,T)$ gravity   We have studied the locally rotationally symmetric (LRS) Bianchi type-I
cosmological model in $f(R,T)$ gravity ($R$ is the Ricci scalar and $T$ is the
trace of the stress energy tensor) with Bulk viscous fluid as matter content.
The model is constructed for the linear form $f(R,T)=R+2f(T)$. The exact
solution of field equations is obtained by using a time varying deceleration
parameter $q$ for a suitable choice of the function $f(T)$. In this work, the
bulk viscous pressure $\bar{p}$ is found to be negative and energy density
$\rho$ is found to be positive. The obtained model is anisotropic, accelerating
and compatible with the results of astronomical observations. Also, some
important features of physical parameters of this model have been discussed.

9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph