Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The 3-point function in large scale structure: redshift distortions and
  galaxy bias   We study the behavior of the three-point correlation function xi_3 of dark
matter and mock galaxies, concentrating on the effects of redshift-space
distortions and the determination of galaxy bias parameters in current redshift
galaxy surveys. On large scales, redshift space distortions tend to wash out
slightly the configuration dependence of the reduced 3-point function Q3 ~
xi_3/xi_2^2. On smaller scales (< 10 Mpc/h), Q3 develops a characteristic
U-shape anisotropy between elongated and open triangles due to the effects of
velocity dispersion. We show that this shape is quite universal, very weakly
dependent on scale, initial spectral index or cosmological parameters and
should be detectable in current galaxy surveys even if affected by shot-noise
or galaxy bias. We present a detailed method for obtaining constraints on
galaxy bias parameters from measurements of Q3 in current galaxy redshift
surveys, based on the eigenmode analysis similar to the one developed for the
bispectrum. We show that our method recovers the bias parameters introduced
into mock galaxies by a HOD prescription and is also able to handle potential
systematics in the case when a smaller number than ideal of mock catalogs is
used to estimate the covariance matrix. We find that current redshift surveys
(e.g. SDSS or 2dFGRS) are just about large enough to get interesting new
constraints on bias.

21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics