Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Assessing the impact of bulk and shear viscosities on large scale
  structure formation   It is analyzed the effects of both bulk and shear viscosities on the
perturbations, relevant for structure formation in late time cosmology. It is
shown that shear viscosity can be as effective as the bulk viscosity on
suppressing the growth of perturbations and delaying the nonlinear regime. A
statistical analysis of the shear and bulk viscous effects is performed and
some constraints on these viscous effects are given.

34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex