Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Halo model description of the non-linear dark matter power spectrum at
  $k \gg 1$ Mpc$^{-1}$   Accurate knowledge of the non-linear dark-matter power spectrum is important
for understanding the large-scale structure of the Universe, the statistics of
dark-matter haloes and their evolution, and cosmological gravitational lensing.
We analytically model the dark-matter power spectrum and its cross-power
spectrum with dark-matter haloes. Our model extends the halo-model formalism,
including realistic substructure population within individual dark-matter
haloes and the scatter of the concentration parameter at fixed halo mass. We
consider three prescriptions for the mass-concentration relation and two for
the substructure distribution in dark-matter haloes. We show that this
extension of the halo model mainly increases the predicted power on the small
scales, and is crucial for proper modeling the cosmological weak-lensing signal
due to low-mass haloes. Our extended formalism shows how the halo model
approach can be improved in accuracy as one increases the number of ingredients
that are calibrated from n-body simulations.

32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
10
The categories of this paper are: q-bio