Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining Primordial Non-Gaussianities from the WMAP2 2-1 Cumulant
  Correlator Power Spectrum   We measure the 2-1 cumulant correlator power spectrum $C^{21}_l$, a
degenerate bispectrum, from the second data release of the Wilkinson Microwave
Anisotropy Probe (WMAP). Our high resolution measurements with SpICE span a
large configuration space ($\simeq 168\times999$) corresponding to the possible
cross-correlations of the maps recorded by the different differencing
assemblies. We present a novel method to recover the eigenmodes of the
correspondingly large Monte Carlo covariance matrix. We examine its eigenvalue
spectrum and use random matrix theory to show that the off diagonal terms are
dominated by noise. We minimize the $\chi^2$ to obtain constraints for the
non-linear coupling parameter $f_{NL} = 22 \pm 52 (1\sigma)$.

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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
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The categories of this paper are: patt-sol
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
3
The categories of this paper are: physics
18
The categories of this paper are: econ
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The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys