Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Density Fluctuation Reconstruction using KS test and D'Agostino's
  K-squared test   We propose a new non-parametric method to constrain the cosmological model
through the growth factor of large-scale structure. To constrain the
cosmological model from observations such as cosmic microwave background or
large-scale structure, the power spectrum or correlation function have been
used since they are well described by the linear perturbation theory or little
correction is needed for the non-linearity; however, it is always important to
find an alternative route to constrain cosmological models in order to avoid
systematic effects due to the estimator and make the constraint more robust.Our
density fluctuation reconstruction method constrains the cosmological model
directly from time evolution of density fluctuation. We propose to apply
Kolmogorov-Smirnov test and D'Agostino's K-squared test to the distribution
function of density fluctuations, which are observed on a light cone. The
density fluctuation recovers the Gaussian distribution only if we reconstruct
the density fluctuation with correct linear growth factors. The method is
verified by the use of Gaussian random field and N-body simulations. This
method will open a new window both to separate the initial three dimensional
density fluctuation and the growth factor of large scale structure.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph