Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Redshift evolution of clustering   We discuss how the redshift dependence of the observed two-point correlation
function of various classes of objects can be related to theoretical
predictions. This relation involves first a calculation of the redshift
evolution of the underlying matter correlations. The next step is to relate
fluctuations in mass to those of any particular class of cosmic objects; in
general terms, this means a model for the bias and how it evolves with cosmic
epoch. Only after these two effects have been quantified can one perform an
appropriate convolution of the non-linearly evolved two-point correlation
function of the objects with their redshift distribution to obtain the
`observed' correlation function for a given sample. This convolution in itself
tends to mask the effect of evolution by mixing amplitudes at different
redshifts. We develop a formalism which incorporates these requirements and, in
particular, a set of plausible models for the evolution of the bias factor. We
apply this formalism to the spatial, angular and projected correlation
functions from different samples of high-redshift objects, assuming a simple
phenomenological model for the initial power-spectrum and an Einstein-de Sitter
cosmological model. We find that our model is roughly consistent with data on
the evolution of QSO and galaxy clustering, but only if the effective degree of
biasing is small. We discuss the differences between our analysis and other
theoretical studies of clustering evolution and argue that the dominant barrier
to making definitive predictions is uncertainty about the appropriate form of
the bias and its evolution with cosmic epoch.

24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs