Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Optimal computation of anisotropic galaxy three point correlation
  function multipoles using 2DFFTLOG formalism   We study two key issues militating against the use of the anisotropic
three-point correlation function (3PCF) for cosmological parameter inference:
difficulties with its computational estimation and high-dimensionality. We show
how high-dimensionality may be reduced significantly by multipole
decompositions of all angular dependence. This allows deriving the full
expression for the multipole moments of the anisotropic 3PCF and its covariance
matrix in a basis where the dimensionality reduces from nine to two at each
multipole in the plane-parallel limit. We use 2D FFTLog formalism to show how
the multipole moments with double momentum integrals over the product of
bispectrum and two highly oscillating spherical Bessel functions and its
covariance with double momentum integrals over the product of three galaxy
power spectra and a combination of four highly oscillating spherical Bessel
functions may be computed optimally.

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The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: bayes-an
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: physics
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The categories of this paper are: acc-phys
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The categories of this paper are: ao-sci