Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Weak Gravitational Lensing Bispectrum   Weak gravitational lensing observations probe the spectrum and evolution of
density fluctuations and the cosmological parameters which govern them. The
non-linear evolution of large scale structure produces a non-Gaussian signal
which is potentially observable in galaxy shear data. We study the three-point
statistics of the convergence, specifically the bispectrum, using the dark
matter halo approach which describes the density field in terms of correlations
between and within dark matter halos. Our approach allows us to study the
effect of the mass distribution in observed fields, in particular the bias
induced by the lack of rare massive halos (clusters) in observed fields. We
show the convergence skewness is primarily due to rare and massive dark matter
halos with skewness converging to its mean value only if halos of mass M >
10^15 M_\sun are present. This calculational method can in principle be used to
correct for such a bias as well as to search for more robust statistics related
to the two and three point correlations.

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The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
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The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci