py3nj.clebsch_gordan

py3nj.clebsch_gordan(two_j1, two_j2, two_j3, two_m1, two_m2, two_m3, ignore_invalid=False)

Calulate Clebsch-Gordan coefficient <j1 m1, j2 m2 | j3 m3>

Parameters

two_j1: array of integers

two_j2: array of integers

two_j3: array of integers

two_m1: array of integers

two_m2: array of integers

two_m3: array of integers

Since j1, …, m3 should be integers or half integers, two_j1 (which means 2 x j1) should be all integers.

force_compute: boolean

If True, returns 0 even for invalid arguments. Otherwise, raise a ValueError.

Returns

clebch-gordan: array

The value of Clebsch Gordan coefficients, with the same size of the arguments.