Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Power correlations in cosmology: limits on primordial non-Gaussian
  density fields   We probe the statistical nature of the primordial density field by measuring
correlations between the power in adjacent Fourier modes. For certain types of
non-Gaussian field, these k-space correlations would be expected to be more
extended than for a Gaussian field, providing a useful discriminatory test for
Gaussian fields. We apply this test to the combined QDOT and 1.2-Jy IRAS galaxy
survey and find the observed density field to be in good agreement with having
Gaussian density fluctuations for modes with k < 0.1 h/Mpc. From this result we
are able to set quantitative limits on a class of possible non-Gaussian
distributions -- the product of a Gaussian field with an independent stochastic
field. The maximum sensitivity is to modulations of a Gaussian field with
coherence scales of 30 Mpc/h and the rms modulation on this scale cannot
greatly exceed unity. We discuss the improvements to this limit likely to be
set by future surveys.

36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph