Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observational Constraints on Modified Chaplygin Gas from Cosmic Growth   We investigate the linear growth function for the large scale structures of
the universe considering modified Chaplygin gas as dark energy. Taking into
account observational growth data for a given range of redshift from the
Wiggle-Z measurements and rms mass fluctuations from Ly-$\alpha$ measurements
we numerically analyze cosmological models to constrain the parameters of the
MCG. The observational data of Hubble parameter with redshift ($Z$) is also
considered. The Wang-Steinhardt ansatz for growth index $\gamma$ and growth
function $f$ (defined as $f=\Omega_{m}^{\gamma} (a)$) are considered for the
numerical analysis. The best-fit values of the equation of state parameters
obtained here is employed to study the growth function $(f)$, growth index
($\gamma$) and state parameter ($\omega$) with redshift $z$. We note that MCG
satisfactorily accommodates an accelerating phase followed by a matter
dominated universe.

28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
1
The categories of this paper are: cs
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph