Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reconstructing the linear power spectrum of cosmological mass
  fluctuations   We describe an attempt to reconstruct the initial conditions for the
formation of cosmological large-scale structure. The power spectrum of the
primordial fluctuations is affected by bias, nonlinear evolution and
redshift-space distortions, but we show how these effects can be corrected for
analytically. Using eight independent datasets, we obtain excellent agreement
in the estimated linear power spectra given the following conditions. First,
the relative bias factors for Abell clusters, radio galaxies, optical galaxies
and IRAS galaxies must be in the ratios 4.5:1.9:1.3:1. Second, the data require
redshift-space distortion: $\Omega^{0.6}/b_{\ss I}
  = 1.0 \pm 0.2$. Third, low values of $\Omega$ and bias are disfavoured. The
shape of the spectrum is extremely well described by a CDM transfer function
with an apparent value of the fitting parameter $\Omega h =0.25$. Tilted models
predict too little power at 100 Mpc wavelengths.

29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
0
The categories of this paper are: hep-ph