Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Cosmic vacuum and large-scale perturbations in the concordant model   The evolution of cosmological large-scale perturbations is described in terms
of the concordant model based on the recent discovery of cosmic vacuum. It is
demonstrated that the process is robustly controlled by a few epoch-independent
physical parameters. The parameters guarantee that the initially weak
perturbations become nonlinear before (but near) the termination of
gravitational instability by cosmic vacuum. No fine tuning for the perturbation
amplitude is needed.

34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph