rotsim2d.couple

Calculate interaction matrix elements between rotational states.

Top-level functions

brute_geometric_factor(js, p)	Brute force sum over 4 dipole matrix elements without RME part for only one polarization component.
brute_rme(js, k)	This should just be four-fold, signed Honl-London factor.
w6j_equiv_args(args)	Return all equivalent lists of Wigner-6j arguments.
w6j_special(*args[, sqrt])	Wigner-6j coefficient from analytical expressions.
G(ji, jj, jk, jl, k[, sqrt])	Wigner-6j part of four-fold reduced matrix element.
T00(phi, phj, phk, phl, k)	Recoupling of four collinear beams with total Q=K=0.
T00_circ(phi, phj, phk, phl, delti, deltj, ...)	Recoupling of four collinear beams with total Q=K=0.
four_couple(js, angles)	The R-factor