Function trv::calc_coupling_coeff_3pt#
Defined in File threept.cpp
Function Documentation#
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double trv::calc_coupling_coeff_3pt(int ell1, int ell2, int ELL, int m1, int m2, int M)#
Calculate the coupling coefficient for spherical-harmonic components of full three-point statistics.
The calculated quantity is
\[ (2\ell_1 + 1) (2\ell_2 + 1) (2L + 1) W(\ell_1, \ell_2, L; 0, 0, 0) W(\ell_1, \ell_2, L; m, 0, M) \,. \]- Parameters
ell1, ell2, ELL, m1, m2, M – Wigner 3-j components.
- Returns
Coupling coefficient for spherical-harmonic components in three-point statistics.